Consider replacing GenericClasses and Type_0, Type_1, etc with TypeVarTuple.

[MHDante]

In order to prevent unseemly types from showing up, consider using:

https://peps.python.org/pep-0646/#overloads-for-accessing-individual-types

this would require a merging of type members.

Somewhat difficult, but worth doing to get rid of un-importable generic types.