I need a new Rapper to listen to... help me out?

I need a new rapper or two to listen to. I am in high school and I
want to know someone who nobody else has heard of. I am not really
into mainstream stuff anymore and want something different. either an
up and coming rapper or a better known underground guy or someone cool
from the 90's.

Right now i am into Curren$y, Big Sean, old Kanye stuff, Lupe Fiasco,
Gilbere Forte, A tribe Called Quest, Common, Kid Cudi, N.W.A., Mos
Def, talib Kweli, and Nas.--- that's kind of a lot to choose form but
i like stuff like that. I guess Midwest and East coast styles.

Please don't recommend Wiz Khalifa, I used to like him but I kinda
can't stand him anymore.

Any ideas would be appreciated, a list would be nice. Thanks