Subclass in type hinting

When you specify cls: A, you’re saying that cls expects an instance of type A. The type hint to specify cls as a class object for the type A (or its subtypes) uses typing.Type.

from typing import Type
def process_any_subclass_type_of_A(cls: Type[A]):
    pass

From The type of class objects
:

Sometimes you want to talk about class objects that inherit from a
given class. This can be spelled as Type[C] where C is a class. In
other words, when C is the name of a class, using C to annotate an
argument declares that the argument is an instance of C (or of a
subclass of C), but using Type[C] as an argument annotation declares
that the argument is a class object deriving from C (or C itself).