I think “hipsters” are something to do with “alternative” rock, whatever that is. Bands that are so creative that they have only four listeners, maybe.
My oldest boy (18 tomorrow) is so fashion-forward that I don’t know what he is. The second (15) is “gamer-geek,” which even I recognize.
As you say, there are many subgroups. My daughter tried to explain to me the difference between a New York Hipster, West Coast hipster and retro-hipster (there may have been some others).
Fortunately, she thinks they’re all poseurs. Of course she gets mad if I try to classify her style.
It’s all the same to me.