Here Are My Favorites In No Particular Order...
-X-raided (Sacramento Crip California Rapper)
-T-nutty (Sacramento Crip California Rapper)
-Jay-Z (Brooklyn New York Rapper)
-Three Six Mafia (Memphis Tennessee Rappers)
-Twista (Chicago Rapper)
-Damu Ridas (Denver Lane Bloods Los Angeles Rappers)
-Clifford Smith aka. Method Man (Former Wu-Tang Rapper)
-DMX (Yonkers New York City Rapper)
-Bone-Thugs-N-Harmony (Cleveland Ohio Rappers)
-2pac (Legendary Los Angeles Rapper)
-Dre. Dog aka. Andre Nickatina (Westcoast Blood Rapper)
-Notorious B.I.G. (Legendary New York Rapper)
Also:
-The Neptunes
-Kelis
-Eve
-Trina
-Lil' Kim
-Chingy
-Capone N Noreaga
-Kurupt
-Xzibit
-Fat Joe & Terror Squad (new album is HOT!)
-Jadakiss
-Kanye West
-Mase
that's all i can think of for now. dont flame...u have to appreciate the art and what they are saying, as you see i do not list g-unit because i really don't appreciate what they bring to the genre.. more excess of drugs guns and sex but at a different angle, although i did enjoy "i wanna get to know ya" and "in da club" but after 50 dropped wanksta and in da club, his style went another way...

and i didnt appreciate it anymore, oh well...