Well there are madd heads on the label that do other shit too but most of them are: EL-P(Company Flow), Aesop Rock, Vast Aire and Vordul(Cannibal Ox/Addams Family), Masiah Bay, Yakballz, Mr.Lif, Murs(Living Legends), Cage(Smut Peddlers/EC records),
Copywrite(MegahertZ/Ec records), RJD2, Camu Tao.

there are a few more cats but that is most of them....