correct me if i'm wrong, but here's what i've gathered so far:
PS Stix: Quasi, Welcome, some Alien/Habitat, FA, Hockey, 917
Bareback/Generator: Polar, Isle, DLX (Real, Antihero, Krooked), Killing Floor, Baker, many others
Chapman: Coda, Zoo, Hopps, Traffic, Supreme, Alltimers?
Pennswood: Scumco
South Central: Bacon, Dieta, Politic, Northern Co, Hammers