Nularity,Singularity, Duality, Triality, Quadrality all seem too have missed your list. I mean theres alot more but these are kinda important if you want any sort of real comprehension on the above topics.
Self is around triality with a few quadratic solves.
Its hard too really get into it when ive alot of stuff going on irl but yeah - knowing 0 and knowing 1 is more than just a stepping stone. Its foundational for all that comes after.
First principles of knowing. This requires you to challange all that you think you know and realize you dont know jack for a fact.