Huh
I knew about infinite dedekind-finite sets but this is interesting https://en.m.wikipedia.org/wiki/Amorphous_set
My absolute faves tho (one mon per species/some inconsistencies with the chart but whatever) are like:
Eldritch writerfag and divine yurivirus, abyssopelagic femboy. Communism will win ☭
Carrd: https://natvoltaic.carrd.co/
Art: https://www.deviantart.com/natvoltaic