I doubt any of the gangs mentioned are really around anymore. Garfield Boys/South Brooklyn Boys... Those are like west side story era gangs during the times when people played stickball in the street, and every neighborhood had a gang and they'd all brawl in the parks

As far as the other ones like tanglewood or bath beach, they basically went extinct when the members either got made, got killed, got arrested, or simply grew up and moved on.

This gets said a lot on here but the city is really a different place from both of those eras above and it's never coming back. I'm sure there are still a lot of kids in Yonkers, places in BK, and mostly on Staten Island , who aspire to be wise guys and work together to move drugs, steroids, take bets, and stuff like that. But I doubt there are any "farm team" gangs around (if they could even be considered farm teams in the first place)