from my knowledge...
Method man aka Johnny Blaze, Ticallion Stallion, blazini, mr mef (basically method mans like "roll that shit, light that shit, smoke it)
Redman (these cats were in How High, cmon)
cypress hill- 90% of their shit involves weed in one way or another
ol school snoop and dre- chronic
nas and dmx in Belly
kottonmouth kings are ok, thats all
devin ok, thats all
outkast- big boi now, andre3000 quit
and any others i might forgot...