Drake is a guy who raps and sings the way he does but can get busy on the microphone.
Usher has made amazing music
Tupac is easily, one of the best rappers of all time.
Wayne has had a distinct musical run
Robert Kelly is by far, one of my favorite artists ever. Dude was a musical genius. I love listening to music and hearing a song like Half On A Baby, and hearing how it sounds similar to 808 by Blaque. I enjoyed his music thoroughly. Songs like Breathe Again Remix, Be Happy, I Wish…..just amazing songs.
The obvious answer is Chris Brown.