Our BBS meetups ("bashes" in our lingo) were a wide range of outside the mainstream people.
Teenagers with nerdish interests (me and my crowd), hippie physicists from the local university, BDSM people, swingers (a lot of swingers, probably party people by nature), a few Hitler-was-right Nazis here and there, some pagan types, conspiracy theorists, gay & lesbian folks, and on and on. There was a some overlap in the crowds, and at the bashes everyone mixed and matched just fine. Fun was had by all.
I later dated someone from those bashes for a few years, and a couple of people from back then are good friends to this day. Still in touch with a few more, all of whom are doing interesting things.
I remember the family type bbses with different people of all ages male/female but I also remember my hacker group meetup where 4 of us shared a 6 pack. Each bbs was it's own scene