Preemo might be the last person you'll think of as a contemporary hit maker, but he produced half an album for Christina Aguilera when she was still a thing.
Boi-1da
Timbo
Zaytoven
Heavy D (ppl forget that he also produced and the ppl that do underrate him)
Trackmasters
Wyclef (see Heavy D)
Jermaine Dupri (not so prominent on the "kept it hip hop" side of things, but he innovated the remix and Hate In Your Blood is one of the hardest beats ever)