diff --git a/stdlib/lib2to3/pgen2/__init__.pyi b/stdlib/lib2to3/pgen2/__init__.pyi
index e69de29bb..15c76865d 100644
--- a/stdlib/lib2to3/pgen2/__init__.pyi
+++ b/stdlib/lib2to3/pgen2/__init__.pyi
@@ -0,0 +1,8 @@
+from collections.abc import Callable
+from lib2to3.pgen2.grammar import Grammar
+from lib2to3.pytree import _RawNode
+from typing import Any
+from typing_extensions import TypeAlias
+
+# This is imported in several lib2to3/pgen2 submodules
+_Convert: TypeAlias = Callable[[Grammar, _RawNode], Any]
diff --git a/stdlib/lib2to3/pgen2/driver.pyi b/stdlib/lib2to3/pgen2/driver.pyi
index 61ec90b4d..45c9aeaa5 100644
--- a/stdlib/lib2to3/pgen2/driver.pyi
+++ b/stdlib/lib2to3/pgen2/driver.pyi
@@ -1,7 +1,8 @@
 from _typeshed import StrPath
 from collections.abc import Iterable
+from lib2to3.pgen2 import _Convert
 from lib2to3.pgen2.grammar import Grammar
-from lib2to3.pytree import _NL, _Convert
+from lib2to3.pytree import _NL
 from logging import Logger
 from typing import IO, Any
 
diff --git a/stdlib/lib2to3/pgen2/parse.pyi b/stdlib/lib2to3/pgen2/parse.pyi
index 14d6004d3..6a07c4a4a 100644
--- a/stdlib/lib2to3/pgen2/parse.pyi
+++ b/stdlib/lib2to3/pgen2/parse.pyi
@@ -1,6 +1,7 @@
 from collections.abc import Sequence
+from lib2to3.pgen2 import _Convert
 from lib2to3.pgen2.grammar import _DFAS, Grammar
-from lib2to3.pytree import _NL, _Convert, _RawNode
+from lib2to3.pytree import _NL, _RawNode
 from typing import Any
 from typing_extensions import TypeAlias
 
diff --git a/stdlib/lib2to3/pytree.pyi b/stdlib/lib2to3/pytree.pyi
index 208a87da8..4db9ab99b 100644
--- a/stdlib/lib2to3/pytree.pyi
+++ b/stdlib/lib2to3/pytree.pyi
@@ -1,5 +1,5 @@
 from _typeshed import Self
-from collections.abc import Callable, Iterator
+from collections.abc import Iterator
 from lib2to3.pgen2.grammar import Grammar
 from typing import Any
 from typing_extensions import TypeAlias
@@ -8,9 +8,6 @@ _NL: TypeAlias = Node | Leaf
 _Context: TypeAlias = tuple[str, int, int]
 _Results: TypeAlias = dict[str, _NL]
 _RawNode: TypeAlias = tuple[int, str, _Context, list[_NL] | None]
-# This alias isn't used in this file,
-# but is imported in other lib2to3 submodules
-_Convert: TypeAlias = Callable[[Grammar, _RawNode], Any]
 
 HUGE: int
 
diff --git a/stdlib/sqlite3/dbapi2.pyi b/stdlib/sqlite3/dbapi2.pyi
index 44595d5ae..01c4c226e 100644
--- a/stdlib/sqlite3/dbapi2.pyi
+++ b/stdlib/sqlite3/dbapi2.pyi
@@ -14,7 +14,6 @@ _SqliteData: TypeAlias = str | ReadableBuffer | int | float | None
 _AdaptedInputData: TypeAlias = _SqliteData | Any
 # The Mapping must really be a dict, but making it invariant is too annoying.
 _Parameters: TypeAlias = SupportsLenAndGetItem[_AdaptedInputData] | Mapping[str, _AdaptedInputData]
-_SqliteOutputData: TypeAlias = str | bytes | int | float | None
 _Adapter: TypeAlias = Callable[[_T], _SqliteData]
 _Converter: TypeAlias = Callable[[bytes], Any]
 
diff --git a/stdlib/sys.pyi b/stdlib/sys.pyi
index 9b113e5ef..a1c875561 100644
--- a/stdlib/sys.pyi
+++ b/stdlib/sys.pyi
@@ -11,7 +11,7 @@ from typing_extensions import Literal, TypeAlias, final
 
 _T = TypeVar("_T")
 
-_OptExcInfo: TypeAlias = OptExcInfo  # TODO: obsolete, remove fall 2022 or later
+_OptExcInfo: TypeAlias = OptExcInfo  # noqa: Y047  # TODO: obsolete, remove fall 2022 or later
 
 # Intentionally omits one deprecated and one optional method of `importlib.abc.MetaPathFinder`
 class _MetaPathFinder(Protocol):
diff --git a/stubs/SQLAlchemy/sqlalchemy/ext/mypy/infer.pyi b/stubs/SQLAlchemy/sqlalchemy/ext/mypy/infer.pyi
index 689bcc565..0ffb05b70 100644
--- a/stubs/SQLAlchemy/sqlalchemy/ext/mypy/infer.pyi
+++ b/stubs/SQLAlchemy/sqlalchemy/ext/mypy/infer.pyi
@@ -7,7 +7,6 @@ _Expression: TypeAlias = Any  # mypy.nodes.Expression
 _RefExpr: TypeAlias = Any  # mypy.nodes.RefExpr
 _TypeInfo: TypeAlias = Any  # mypy.nodes.TypeInfo
 _Var: TypeAlias = Any  # mypy.nodes.Var
-_StrExpr: TypeAlias = Any  # mypy.nodes.StrExpr
 _SemanticAnalyzerPluginInterface: TypeAlias = Any  # mypy.plugin.SemanticAnalyzerPluginInterface
 _ProperType: TypeAlias = Any  # mypy.types.ProperType
 
diff --git a/stubs/SQLAlchemy/sqlalchemy/orm/persistence.pyi b/stubs/SQLAlchemy/sqlalchemy/orm/persistence.pyi
index 727e35802..8d5d721e7 100644
--- a/stubs/SQLAlchemy/sqlalchemy/orm/persistence.pyi
+++ b/stubs/SQLAlchemy/sqlalchemy/orm/persistence.pyi
@@ -1,11 +1,8 @@
 from typing import Any
-from typing_extensions import Literal, TypeAlias
 
 from ..sql.base import CompileState, Options
 from ..sql.dml import DeleteDMLState, UpdateDMLState
 
-_SynchronizeSessionArgument: TypeAlias = Literal[False, "evaluate", "fetch"]
-
 def save_obj(base_mapper, states, uowtransaction, single: bool = ...) -> None: ...
 def post_update(base_mapper, states, uowtransaction, post_update_cols) -> None: ...
 def delete_obj(base_mapper, states, uowtransaction) -> None: ...
diff --git a/stubs/SQLAlchemy/sqlalchemy/orm/query.pyi b/stubs/SQLAlchemy/sqlalchemy/orm/query.pyi
index b7359927c..21aef16fd 100644
--- a/stubs/SQLAlchemy/sqlalchemy/orm/query.pyi
+++ b/stubs/SQLAlchemy/sqlalchemy/orm/query.pyi
@@ -1,18 +1,19 @@
 from _typeshed import Self
 from collections.abc import Iterator
 from typing import Any, Generic, TypeVar
+from typing_extensions import Literal, TypeAlias
 
 from ..sql.annotation import SupportsCloneAnnotations
 from ..sql.base import Executable
 from ..sql.selectable import GroupedElement, HasHints, HasPrefixes, HasSuffixes, SelectBase, _SelectFromElements
 from . import interfaces
 from .context import QueryContext as QueryContext
-from .persistence import _SynchronizeSessionArgument
 from .util import aliased as aliased
 
 __all__ = ["Query", "QueryContext", "aliased"]
 
 _T = TypeVar("_T")
+_SynchronizeSessionArgument: TypeAlias = Literal[False, "evaluate", "fetch"]
 
 class Query(_SelectFromElements, SupportsCloneAnnotations, HasPrefixes, HasSuffixes, HasHints, Executable, Generic[_T]):
     logger: Any
diff --git a/stubs/psutil/psutil/__init__.pyi b/stubs/psutil/psutil/__init__.pyi
index 868dc1b66..a7ea030c1 100644
--- a/stubs/psutil/psutil/__init__.pyi
+++ b/stubs/psutil/psutil/__init__.pyi
@@ -3,6 +3,7 @@ from _typeshed import Self
 from collections.abc import Callable, Iterable, Iterator
 from contextlib import AbstractContextManager
 from typing import Any
+from typing_extensions import Literal, TypeAlias
 
 from ._common import (
     AIX as AIX,
@@ -50,7 +51,6 @@ from ._common import (
     NoSuchProcess as NoSuchProcess,
     TimeoutExpired as TimeoutExpired,
     ZombieProcess as ZombieProcess,
-    _Status,
     pconn,
     pcputimes,
     pctxsw,
@@ -118,6 +118,23 @@ version_info: tuple[int, int, int]
 __version__: str
 __author__: str
 
+_Status: TypeAlias = Literal[
+    "running",
+    "sleeping",
+    "disk-sleep",
+    "stopped",
+    "tracing-stop",
+    "zombie",
+    "dead",
+    "wake-kill",
+    "waking",
+    "idle",
+    "locked",
+    "waiting",
+    "suspended",
+    "parked",
+]
+
 class Process:
     def __init__(self, pid: int | None = ...) -> None: ...
     def __eq__(self, other: object) -> bool: ...
diff --git a/stubs/psutil/psutil/_common.pyi b/stubs/psutil/psutil/_common.pyi
index 9c854e732..aed998d38 100644
--- a/stubs/psutil/psutil/_common.pyi
+++ b/stubs/psutil/psutil/_common.pyi
@@ -3,7 +3,7 @@ from _typeshed import StrOrBytesPath, SupportsWrite
 from collections.abc import Callable
 from socket import AddressFamily, SocketKind
 from typing import Any, NamedTuple, TypeVar, overload
-from typing_extensions import Literal, TypeAlias
+from typing_extensions import Literal
 
 POSIX: bool
 WINDOWS: bool
@@ -32,23 +32,6 @@ STATUS_WAITING: Literal["waiting"]
 STATUS_SUSPENDED: Literal["suspended"]
 STATUS_PARKED: Literal["parked"]
 
-_Status: TypeAlias = Literal[
-    "running",
-    "sleeping",
-    "disk-sleep",
-    "stopped",
-    "tracing-stop",
-    "zombie",
-    "dead",
-    "wake-kill",
-    "waking",
-    "idle",
-    "locked",
-    "waiting",
-    "suspended",
-    "parked",
-]
-
 CONN_ESTABLISHED: str
 CONN_SYN_SENT: str
 CONN_SYN_RECV: str
diff --git a/stubs/requests/requests/api.pyi b/stubs/requests/requests/api.pyi
index 0006f6851..c4b3d5c5f 100644
--- a/stubs/requests/requests/api.pyi
+++ b/stubs/requests/requests/api.pyi
@@ -1,19 +1,11 @@
+from collections.abc import Mapping
 from typing import Any
+from typing_extensions import TypeAlias
 
 from .models import Response
-from .sessions import (
-    RequestsCookieJar,
-    _Auth,
-    _Cert,
-    _Data,
-    _Files,
-    _HeadersMapping,
-    _HooksInput,
-    _Params,
-    _TextMapping,
-    _Timeout,
-    _Verify,
-)
+from .sessions import RequestsCookieJar, _Auth, _Cert, _Data, _Files, _HooksInput, _Params, _TextMapping, _Timeout, _Verify
+
+_HeadersMapping: TypeAlias = Mapping[str, str | bytes]
 
 def request(
     method: str | bytes,
diff --git a/stubs/requests/requests/sessions.pyi b/stubs/requests/requests/sessions.pyi
index 61be93aa3..f6df1d688 100644
--- a/stubs/requests/requests/sessions.pyi
+++ b/stubs/requests/requests/sessions.pyi
@@ -70,7 +70,6 @@ _Params: TypeAlias = Union[
     str | bytes,
 ]
 _TextMapping: TypeAlias = MutableMapping[str, str]
-_HeadersMapping: TypeAlias = Mapping[str, str | bytes]
 _HeadersUpdateMapping: TypeAlias = Mapping[str, str | bytes | None]
 _Timeout: TypeAlias = Union[float, tuple[float, float], tuple[float, None]]
 _Verify: TypeAlias = bool | str
diff --git a/stubs/urllib3/urllib3/connection.pyi b/stubs/urllib3/urllib3/connection.pyi
index f96e1640b..8baca880b 100644
--- a/stubs/urllib3/urllib3/connection.pyi
+++ b/stubs/urllib3/urllib3/connection.pyi
@@ -1,16 +1,12 @@
 import ssl
 from builtins import ConnectionError as ConnectionError
-from collections.abc import Iterable
 from http.client import HTTPConnection as _HTTPConnection, HTTPException as HTTPException
-from typing import IO, Any
-from typing_extensions import TypeAlias
+from typing import Any
 
 from . import exceptions, util
 from .packages import ssl_match_hostname
 from .util import ssl_
 
-_TYPE_BODY: TypeAlias = bytes | IO[Any] | Iterable[bytes] | str
-
 class DummyConnection: ...
 
 BaseSSLError = ssl.SSLError
diff --git a/stubs/urllib3/urllib3/response.pyi b/stubs/urllib3/urllib3/response.pyi
index cc7661c7d..f5b8d25cb 100644
--- a/stubs/urllib3/urllib3/response.pyi
+++ b/stubs/urllib3/urllib3/response.pyi
@@ -1,15 +1,16 @@
 import io
 from _typeshed import Self
-from collections.abc import Iterator, Mapping
+from collections.abc import Iterable, Iterator, Mapping
 from http.client import HTTPMessage as _HttplibHTTPMessage, HTTPResponse as _HttplibHTTPResponse
-from typing import Any
-from typing_extensions import Literal
+from typing import IO, Any
+from typing_extensions import Literal, TypeAlias
 
 from urllib3.connectionpool import HTTPConnection
 
 from . import HTTPConnectionPool, Retry
 from ._collections import HTTPHeaderDict
-from .connection import _TYPE_BODY
+
+_TYPE_BODY: TypeAlias = bytes | IO[Any] | Iterable[bytes] | str
 
 class DeflateDecoder:
     def __init__(self) -> None: ...