I think skipless / non-skipless should not be the sub categories especially ill-defined as they are. I propose just three categories with no sub categories:

Any% - Beat the game as fast as possible. No restrictions. Can prep a file with death glitch All levels - Beat both levels and enter the credits 100% - Beat both levels collecting all collectables and enter the credits

This doc will hopefully evolve over time and stay up to date: https://docs.google.com/spreadsheets/d/1sCiEI0iOIByhKGSWTe-D-lLH6KBuQls8LnOtevMwDI4/edit?usp=sharing

Huge thanks to Vorime for theorycrafting a lot of the current run and suggesting we make this resource