diff --git a/lib/matplotlib/__init__.pyi b/lib/matplotlib/__init__.pyi
@@ -32,14 +32,11 @@ __all__ = [
 import os
 from pathlib import Path
 
-from . import cbook, rcsetup
-from collections.abc import Callable, Generator, MutableMapping
+from collections.abc import Callable, Generator
 import contextlib
 from packaging.version import Version
 
 from matplotlib._api import MatplotlibDeprecationWarning
-from matplotlib.cbook import sanitize_sequence
-from matplotlib.rcsetup import cycler, validate_backend
 from typing import Any, NamedTuple
 
 __bibtex__: str

diff --git a/lib/matplotlib/animation.pyi b/lib/matplotlib/animation.pyi
@@ -2,13 +2,6 @@ import abc
 from collections.abc import Callable, Collection, Iterable, Sequence, Generator
 import contextlib
 from pathlib import Path
-from matplotlib import cbook
-from matplotlib._animation_data import (
-    DISPLAY_TEMPLATE,
-    INCLUDED_FRAMES,
-    JS_INCLUDE,
-    STYLE_INCLUDE,
-)
 from matplotlib.artist import Artist
 from matplotlib.backend_bases import TimerBase
 from matplotlib.figure import Figure

diff --git a/lib/matplotlib/artist.pyi b/lib/matplotlib/artist.pyi
@@ -1,18 +1,12 @@
-from . import cbook as cbook
-from .axes import Axes
 from .axes._base import _AxesBase
 from .backend_bases import RendererBase, MouseEvent
-from .cm import ScalarMappable
-from .colors import BoundaryNorm
 from .figure import Figure, SubFigure
 from .path import Path
 from .patches import Patch
 from .patheffects import AbstractPathEffect
 from .transforms import (
     Bbox,
-    IdentityTransform,
     Transform,
-    TransformedBbox,
     TransformedPatchPath,
     TransformedPath,
 )

diff --git a/lib/matplotlib/axes/_base.pyi b/lib/matplotlib/axes/_base.pyi
@@ -1,12 +1,11 @@
 import matplotlib.artist as martist
 
 import datetime
-from collections.abc import Callable, Iterable, Iterator, Sequence, MutableSequence
-from matplotlib import cbook, offsetbox
+from collections.abc import Callable, Iterable, Iterator, Sequence
+from matplotlib import cbook
 from matplotlib.artist import Artist
 from matplotlib.axis import XAxis, YAxis, Tick
 from matplotlib.backend_bases import RendererBase, MouseButton, MouseEvent
-from matplotlib.cbook import index_of
 from matplotlib.container import Container
 from matplotlib.collections import Collection
 from matplotlib.cm import ScalarMappable
@@ -20,8 +19,7 @@ from matplotlib.scale import ScaleBase
 from matplotlib.spines import Spines
 from matplotlib.table import Table
 from matplotlib.text import Text
-from matplotlib.rcsetup import cycler, validate_axisbelow
-from matplotlib.transforms import Transform, BboxBase, Bbox
+from matplotlib.transforms import Transform, Bbox
 
 from cycler import Cycler
 

diff --git a/lib/matplotlib/axes/_secondary_axes.pyi b/lib/matplotlib/axes/_secondary_axes.pyi
@@ -1,5 +1,5 @@
 from matplotlib.axes._base import _AxesBase
-from matplotlib.axis import Axis, Tick
+from matplotlib.axis import Tick
 
 from matplotlib.transforms import Transform
 

diff --git a/lib/matplotlib/backend_bases.pyi b/lib/matplotlib/backend_bases.pyi
@@ -2,16 +2,10 @@ from enum import Enum, IntEnum
 import os
 from matplotlib import (
     cbook,
-    colors,
-    get_backend,
-    is_interactive,
-    rcParams,
-    textpath,
     transforms,
     widgets,
     _api,
 )
-from matplotlib._pylab_helpers import Gcf
 from matplotlib.artist import Artist
 from matplotlib.axes import Axes
 from matplotlib.backend_managers import ToolManager
@@ -22,7 +16,7 @@ from matplotlib.font_manager import FontProperties
 from matplotlib.path import Path
 from matplotlib.texmanager import TexManager
 from matplotlib.text import Text
-from matplotlib.transforms import Affine2D, Transform, TransformedPath, Bbox
+from matplotlib.transforms import Transform, TransformedPath, Bbox
 
 from collections.abc import Callable, Iterable, Sequence
 from typing import Any, IO, Literal, NamedTuple, TypeVar

diff --git a/lib/matplotlib/backend_tools.pyi b/lib/matplotlib/backend_tools.pyi
@@ -5,7 +5,6 @@ from matplotlib.backend_bases import ToolContainerBase, FigureCanvasBase
 from matplotlib.backend_managers import ToolManager, ToolEvent
 from matplotlib.figure import Figure
 from matplotlib.scale import ScaleBase
-from matplotlib._pylab_helpers import Gcf
 
 from typing import Any
 

diff --git a/lib/matplotlib/cm.pyi b/lib/matplotlib/cm.pyi
@@ -1,7 +1,6 @@
 from collections.abc import Iterator, Mapping
-from matplotlib import cbook, colors, scale
+from matplotlib import cbook, colors
 from matplotlib.colorbar import Colorbar
-from matplotlib._cm import datad
 
 import numpy as np
 from numpy.typing import ArrayLike

diff --git a/lib/matplotlib/collections.pyi b/lib/matplotlib/collections.pyi
@@ -1,12 +1,11 @@
-from . import artist, cbook, cm, transforms
+from . import artist, cm, transforms
 from .backend_bases import MouseEvent
 from .artist import Artist
 from .colors import Normalize, Colormap
 from .path import Path
 from .patches import Patch
 from .ticker import Locator, Formatter
 from .tri import Triangulation
-from ._enums import CapStyle, JoinStyle
 
 import numpy as np
 from numpy.typing import ArrayLike

diff --git a/lib/matplotlib/colorbar.pyi b/lib/matplotlib/colorbar.pyi
@@ -1,5 +1,5 @@
 import matplotlib.spines as mspines
-from matplotlib import cbook, cm, collections, colors, contour, ticker
+from matplotlib import cm, collections, colors, contour
 from matplotlib.axes import Axes
 from matplotlib.backend_bases import RendererBase
 from matplotlib.patches import Patch

diff --git a/lib/matplotlib/colors.pyi b/lib/matplotlib/colors.pyi
@@ -1,4 +1,3 @@
-from ._color_data import BASE_COLORS, CSS4_COLORS, TABLEAU_COLORS, XKCD_COLORS
 from collections.abc import Callable, Iterable, Iterator, Mapping, Sequence
 from matplotlib import cbook, scale
 import re
@@ -9,6 +8,12 @@ from .typing import ColorType
 import numpy as np
 from numpy.typing import ArrayLike
 
+# Explicitly export colors dictionaries which are imported in the impl
+BASE_COLORS: dict[str, ColorType]
+CSS4_COLORS: dict[str, ColorType]
+TABLEAU_COLORS: dict[str, ColorType]
+XKCD_COLORS: dict[str, ColorType]
+
 class _ColorMapping(dict[str, ColorType]):
     cache: dict[tuple[ColorType, float | None], tuple[float, float, float, float]]
     def __init__(self, mapping) -> None: ...

diff --git a/lib/matplotlib/container.pyi b/lib/matplotlib/container.pyi
@@ -1,4 +1,3 @@
-from matplotlib import cbook
 from matplotlib.artist import Artist
 from matplotlib.lines import Line2D
 from matplotlib.collections import LineCollection

diff --git a/lib/matplotlib/contour.pyi b/lib/matplotlib/contour.pyi
@@ -1,7 +1,6 @@
 import matplotlib.cm as cm
 from matplotlib.artist import Artist
 from matplotlib.axes import Axes
-from matplotlib.backend_bases import MouseButton
 from matplotlib.collections import Collection, PathCollection
 from matplotlib.colors import Colormap, Normalize
 from matplotlib.font_manager import FontProperties

diff --git a/lib/matplotlib/dviread.pyi b/lib/matplotlib/dviread.pyi
@@ -1,4 +1,3 @@
-from matplotlib import cbook as cbook
 from pathlib import Path
 import io
 import os

diff --git a/lib/matplotlib/figure.pyi b/lib/matplotlib/figure.pyi
@@ -1,39 +1,24 @@
 import os
 
-from matplotlib import backend_bases, projections
-from matplotlib.artist import Artist, allow_rasterization
+from matplotlib.artist import Artist
 from matplotlib.axes import Axes, SubplotBase
 from matplotlib.backend_bases import (
-    DrawEvent,
     FigureCanvasBase,
     MouseButton,
     MouseEvent,
-    NonGuiException,
     RendererBase,
 )
 from matplotlib.colors import Colormap, Normalize
 from matplotlib.colorbar import Colorbar
 from matplotlib.cm import ScalarMappable
 from matplotlib.gridspec import GridSpec, SubplotSpec
 from matplotlib.image import _ImageBase, FigureImage
-from matplotlib.layout_engine import (
-    ConstrainedLayoutEngine,
-    LayoutEngine,
-    PlaceHolderLayoutEngine,
-    TightLayoutEngine,
-)
+from matplotlib.layout_engine import LayoutEngine
 from matplotlib.legend import Legend
 from matplotlib.lines import Line2D
 from matplotlib.patches import Rectangle, Patch
 from matplotlib.text import Text
-from matplotlib.transforms import (
-    Affine2D,
-    Bbox,
-    BboxBase,
-    BboxTransformTo,
-    TransformedBbox,
-    Transform,
-)
+from matplotlib.transforms import Affine2D, Bbox, Transform
 
 import numpy as np
 from numpy.typing import ArrayLike

diff --git a/lib/matplotlib/font_manager.pyi b/lib/matplotlib/font_manager.pyi
@@ -1,13 +1,8 @@
 from dataclasses import dataclass
-import json
 import os
 
 from matplotlib._afm import AFM
-from matplotlib import cbook, ft2font
-from matplotlib._fontconfig_pattern import (
-    generate_fontconfig_pattern,
-    parse_fontconfig_pattern,
-)
+from matplotlib import ft2font
 
 from pathlib import Path
 

diff --git a/lib/matplotlib/image.pyi b/lib/matplotlib/image.pyi
@@ -1,23 +1,16 @@
-import io
 import os
 import pathlib
 
 from matplotlib._image import *
 import matplotlib.artist as martist
 from matplotlib.axes import Axes
-from matplotlib import cbook, cm
-from matplotlib.backend_bases import FigureCanvasBase, RendererBase, MouseEvent
+from matplotlib import cm
+from matplotlib.backend_bases import RendererBase, MouseEvent
 from matplotlib.colors import Colormap, Normalize
 from matplotlib.figure import Figure
 from matplotlib.transforms import (
     Affine2D,
-    Bbox,
     BboxBase,
-    BboxTransform,
-    BboxTransformTo,
-    IdentityTransform,
-    TransformedBbox,
-    Transform,
 )
 
 from collections.abc import Sequence

diff --git a/lib/matplotlib/layout_engine.pyi b/lib/matplotlib/layout_engine.pyi
@@ -1,5 +1,3 @@
-from matplotlib._constrained_layout import do_constrained_layout
-from matplotlib._tight_layout import get_subplotspec_list, get_tight_layout_figure
 from matplotlib.figure import Figure
 
 from typing import Any

diff --git a/lib/matplotlib/legend.pyi b/lib/matplotlib/legend.pyi
@@ -1,38 +1,17 @@
-from . import legend_handler
-from matplotlib import colors, offsetbox
 from matplotlib.axes import Axes
-from matplotlib.artist import Artist, allow_rasterization
+from matplotlib.artist import Artist
 from matplotlib.backend_bases import MouseEvent
-from matplotlib.cbook import silent_list
-from matplotlib.collections import (
-    CircleCollection,
-    Collection,
-    LineCollection,
-    PathCollection,
-    PolyCollection,
-    RegularPolyCollection,
-)
-from matplotlib.container import BarContainer, ErrorbarContainer, StemContainer
 from matplotlib.figure import Figure
 from matplotlib.font_manager import FontProperties
 from matplotlib.legend_handler import HandlerBase
 from matplotlib.lines import Line2D
 from matplotlib.offsetbox import (
-    AnchoredOffsetbox,
     DraggableOffsetBox,
-    DrawingArea,
-    HPacker,
-    TextArea,
-    VPacker,
 )
-from matplotlib.patches import FancyBboxPatch, Patch, Rectangle, Shadow, StepPatch
+from matplotlib.patches import FancyBboxPatch, Patch, Rectangle
 from matplotlib.text import Text
 from matplotlib.transforms import (
-    Bbox,
     BboxBase,
-    BboxTransformFrom,
-    BboxTransformTo,
-    TransformedBbox,
     Transform,
 )
 

diff --git a/lib/matplotlib/lines.pyi b/lib/matplotlib/lines.pyi
@@ -1,25 +1,8 @@
-from . import cbook
-from .artist import Artist, allow_rasterization
+from .artist import Artist
 from .axes import Axes
 from .backend_bases import MouseEvent, FigureCanvasBase
-from .cbook import STEP_LOOKUP_MAP, ls_mapper, ls_mapper_r
-from .markers import (
-    CARETDOWN,
-    CARETDOWNBASE,
-    CARETLEFT,
-    CARETLEFTBASE,
-    CARETRIGHT,
-    CARETRIGHTBASE,
-    CARETUP,
-    CARETUPBASE,
-    TICKDOWN,
-    TICKLEFT,
-    TICKRIGHT,
-    TICKUP,
-    MarkerStyle,
-)
 from .path import Path
-from .transforms import Bbox, BboxTransformTo, TransformedPath, Transform
+from .transforms import Bbox, Transform
 
 from collections.abc import Callable, Sequence
 from typing import Any, Literal, overload

diff --git a/lib/matplotlib/markers.pyi b/lib/matplotlib/markers.pyi
@@ -1,7 +1,6 @@
-from . import cbook
 from ._enums import CapStyle, JoinStyle
 from .path import Path
-from .transforms import Affine2D, IdentityTransform, Transform
+from .transforms import Affine2D, Transform
 
 from numpy.typing import ArrayLike
 from .typing import FillStyleType

diff --git a/lib/matplotlib/mathtext.pyi b/lib/matplotlib/mathtext.pyi
@@ -1,8 +1,12 @@
-import io
 import os
-from ._mathtext import RasterParse, VectorParse, get_unicode_index
 from matplotlib.font_manager import FontProperties
-from matplotlib.ft2font import FT2Image, LOAD_NO_HINTING
+
+# Re-exported API from _mathtext.
+from ._mathtext import (
+    RasterParse as RasterParse,
+    VectorParse as VectorParse,
+    get_unicode_index as get_unicode_index,
+)
 
 from typing import IO, Literal
 from matplotlib.typing import ColorType

diff --git a/lib/matplotlib/mlab.pyi b/lib/matplotlib/mlab.pyi
@@ -1,5 +1,3 @@
-from matplotlib import cbook
-
 from collections.abc import Callable
 import functools
 from typing import Literal

diff --git a/lib/matplotlib/offsetbox.pyi b/lib/matplotlib/offsetbox.pyi
@@ -1,13 +1,12 @@
 import matplotlib.artist as martist
-from matplotlib.axes import Axes
 from matplotlib.backend_bases import RendererBase, Event, FigureCanvasBase
 from matplotlib.colors import Colormap, Normalize
 import matplotlib.text as mtext
 from matplotlib.figure import Figure
 from matplotlib.font_manager import FontProperties
 from matplotlib.image import BboxImage
 from matplotlib.patches import FancyArrowPatch, FancyBboxPatch
-from matplotlib.transforms import Bbox, BboxBase, TransformedBbox, Transform
+from matplotlib.transforms import Bbox, BboxBase, Transform
 
 import numpy as np
 from numpy.typing import ArrayLike