What sort of process did you go about making the classpexes?
Are you asking what made me start making the hexagons, or how i make them?
for the latter, i just basically use Inkscape like i do with all my ambigrams. Inkscape is a really nice, free and open-source vector graphics program that's easy to become familiar with, so i recommend it verily.
If you want the story of why i started doing these, well that one's a bit more lengthy. One time, my college homestuck friends and i thought up some "They Wait" slogans for ourselves, and i wanted to make some simple graphic thingy for it, with a mosaic-style background based on our homestuck classpect.
I'm not a good artist of any kind, so i hilariously failed at doing the thing. However,in my attempts i managed to stumble upon the idea of a stylized, geometric interpretation of classes and aspects, which culminated in me making the first Rogue of Mind design.
Again, because of my lack of artistic capability, the designs have been under continuous revision since then.