My life as an extreme extrovert and social chameleon has made me acquainted with many subcultures and I've swam through genres like a.. thing that swims fluently.
Here are my observations about the average quadra/type correlation in subcultures:
Hipsters are pretty delta, maybe some alphas
Punk rockers are beta mostly, although the political anarcho idealists are usually alpha. There are some gammas as well and they will call you a fashion punk rocker or a wannabe if you don't have the right kinda gear, diet and band patches.
Crust rockers are gamma/beta
Local heavy metal people are alpha/beta.
Hippies are very varied, I will try to make more categories for hippy subtypes
Skinheads are beta
Goths are beta/gamma, some cybergoths are alpha
Demoscene sounds fucking alpha, but I don't know too many of them
Industrial and sXe seem Se/Ni
These are my own observations from the local subcultures.
And don't go around waving the not type related card or I'll type you as a spoilsport. Maybe some things aren't type related but there are correlations we can think of. Trying to dismiss a theory is unconstructive and unscientific approach to the allegation of the existence of a correlation. And, no, we have no firm scientific means of verifying a socionics theory, but if you were looking for such, the fuck are you doing here?
I also don't want to witness the "I am (/my friend is) A type and part of Z subculture although you said Zs are B and C types; therefore you must be wrong" argument. I SPEAK IN GENERALIZATIONS, DEAL WITH IT. This is not to say that I am not interested on your views on the matter, naturally, even if they would contain you and your subculture to back up the allegation.