I have to plug someone from my home town: Cadence Weapon he’s got a mix of beats but is very unique and a bit electro-influenced.
Adding to jownpowell’s list would be Sixtoo and his collab with Buck65, Sebutones – all very incestuous with Sage Francis et al. though he never got as renowned as Buck65. I suppose you could toss in Aesop Rock’s earlier stuff too.
Prefuse 73 has some great laid-back beats.
Finally, though considered “old” by today’s standards (though they’re not 85ers) would be Digable Planets and the album you want to check out is Blowout Comb.