The OGs: Easy E, NWA, Too Short (now that's the good stuff).

Soft Rap: Tone-Loc, PM Dawn, Arrested Development (mostly boring)

Classic Rap: Grandmaster Flash and the Furious 5, Kurtis Blow, Fat Boys(pretty good...)

Hardcore Rap: Onyx, Ghetto Boys, Booya Tribe

Contemporary Rap: Sean Combs, Jay-Z etc. (dumb)