diff --git a/pandas-stubs/core/dtypes/generic.pyi b/pandas-stubs/core/dtypes/generic.pyi
new file mode 100644
index 000000000..380d600f5
--- /dev/null
+++ b/pandas-stubs/core/dtypes/generic.pyi
@@ -0,0 +1,15 @@
+from pandas import (
+    DataFrame,
+    Index,
+    Series,
+)
+from pandas.core.arrays import ExtensionArray
+from pandas.core.generic import NDFrame
+
+ABCIndex = type[Index]
+
+ABCNDFrame = type[NDFrame]
+ABCSeries = type[Series]
+ABCDataFrame = type[DataFrame]
+
+ABCExtensionArray = type[ExtensionArray]
diff --git a/pandas-stubs/core/groupby/groupby.pyi b/pandas-stubs/core/groupby/groupby.pyi
index d772b795c..538a44fd8 100644
--- a/pandas-stubs/core/groupby/groupby.pyi
+++ b/pandas-stubs/core/groupby/groupby.pyi
@@ -7,7 +7,6 @@ from pandas.core.base import (
 from pandas.core.frame import DataFrame
 from pandas.core.generic import NDFrame
 from pandas.core.groupby import ops
-from pandas.core.groupby.indexing import GroupByIndexingMixin
 from pandas.core.indexes.api import Index
 from pandas.core.series import Series
 
@@ -23,7 +22,7 @@ class GroupByPlot(PandasObject):
     def __call__(self, *args, **kwargs): ...
     def __getattr__(self, name: str): ...
 
-class BaseGroupBy(PandasObject, SelectionMixin[NDFrameT], GroupByIndexingMixin):
+class BaseGroupBy(PandasObject, SelectionMixin[NDFrameT]):
     level = ...
     as_index = ...
     keys = ...
diff --git a/pandas-stubs/py.typed b/pandas-stubs/py.typed
new file mode 100644
index 000000000..e69de29bb
diff --git a/pandas-stubs/util/__init__.pyi b/pandas-stubs/util/__init__.pyi
index 137c9a73c..cd7193530 100644
--- a/pandas-stubs/util/__init__.pyi
+++ b/pandas-stubs/util/__init__.pyi
@@ -8,10 +8,3 @@ from ._decorators import (
     Substitution as Substitution,
     cache_readonly as cache_readonly,
 )
-
-def __getattr__(name): ...
-
-class _testing:
-    def __getattr__(self, item): ...
-
-testing = ...
diff --git a/pyproject.toml b/pyproject.toml
index e0adeb4a2..313700414 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -170,7 +170,6 @@ typeCheckingMode = "strict"
 stubPath = "."
 include = ["tests", "pandas-stubs"]
 # disable subset of strict
-reportIncompleteStub = false
 reportInconsistentConstructor = false
 reportMissingParameterType = false
 reportMissingTypeArgument = false