here's some examples of the genres i prefer to be placed in just to prove my own underground hipness:
a: no-wave, power violence, spazcore, and grindcore are all pretty safe bets although still too main stream for my likings; people have actually heard and used these terms before.
b: hentai-noisecore is pretty sweet but still too binding to a genre since it is actually descriptive.
c: avant-garbage is my personal favorite. it's all inclusive while simultaneously being all exclusive.