IMO
Goa-This includes all styles of Goa (Old School, New School, Nitzho etc.)
Full On-This includes all styles of Full On (Poppy, Israeli, SA, Dark, Hard etc.)
Progressive-This includes Tectrance too since IMO most of them sound Proggy in my ears. Also minimal, trancey, housey psy etc.
Darkpsy-This includes Forest, Russian style, Psycore, Horror etc.
Experimental-Suomi, Australian, genres fusion, weird stuff
Ambient/Downtempo-From beatless ambient to Shpongle
and just plain Psytrance-For everything else, like MEEO for example or the old IM.