User blog comment:Cookiefonster/The nine sides of googology/@comment-10429372-20140819154725

I'd like to define some subcases for sides 1 and 2.

A for uncomputable functions

B for combinatorial functions

C for array notations

D for ordinal notations, like the catching function.

I'm mainly 1A, and also 2C, 1B and 1C.