diff --git a/astroid/brain/brain_numpy_ndarray.py b/astroid/brain/brain_numpy_ndarray.py
index 5748421fb9..38db4e62f4 100644
--- a/astroid/brain/brain_numpy_ndarray.py
+++ b/astroid/brain/brain_numpy_ndarray.py
@@ -151,8 +151,8 @@ def __class_getitem__(cls, value):
     return node.infer(context=context)
 
 
-def _looks_like_numpy_ndarray(node) -> bool:
-    return isinstance(node, Attribute) and node.attrname == "ndarray"
+def _looks_like_numpy_ndarray(node: Attribute) -> bool:
+    return node.attrname == "ndarray"
 
 
 def register(manager: AstroidManager) -> None:
diff --git a/astroid/brain/brain_type.py b/astroid/brain/brain_type.py
index d3461e68d4..6fd0179cbe 100644
--- a/astroid/brain/brain_type.py
+++ b/astroid/brain/brain_type.py
@@ -28,7 +28,7 @@
 from astroid.manager import AstroidManager
 
 
-def _looks_like_type_subscript(node) -> bool:
+def _looks_like_type_subscript(node: nodes.Name) -> bool:
     """
     Try to figure out if a Name node is used inside a type related subscript.
 
@@ -36,7 +36,7 @@ def _looks_like_type_subscript(node) -> bool:
     :type node: astroid.nodes.node_classes.NodeNG
     :return: whether the node is a Name node inside a type related subscript
     """
-    if isinstance(node, nodes.Name) and isinstance(node.parent, nodes.Subscript):
+    if isinstance(node.parent, nodes.Subscript):
         return node.name == "type"
     return False
 
diff --git a/astroid/brain/brain_typing.py b/astroid/brain/brain_typing.py
index 38b01778b1..62f154b4f5 100644
--- a/astroid/brain/brain_typing.py
+++ b/astroid/brain/brain_typing.py
@@ -398,7 +398,7 @@ def infer_special_alias(
 
 
 def _looks_like_typing_cast(node: Call) -> bool:
-    return isinstance(node, Call) and (
+    return (
         isinstance(node.func, Name)
         and node.func.name == "cast"
         or isinstance(node.func, Attribute)