Metal - fat, spotty, probably virgins, often in their teenage years, wearing camouflaged combat trousers.
Indie - thin, ridiculous hair, probably virgins - but some unrequited love going on, probably wearing cordrouy.
"Experimental" - middle aged (whatever age they are), uptight, have a partner, but who is probably long suffering.
GO! (i fall into "experimental" by the way. Probably the most accurate of the three).