Rap isn't music, it's a form of saying stuff. Might even call it poetry. Hiphop is the name of the music style you're looking for. At least it is supposed to be a music style. Nowadays it's mostly "badass gangstas" trying to top the previous hasbeen in dirty talk and to break the record of curse words in one track. Modern day R&B is incredibly lame as well. In fact, anything that requires tough talk, golden chains and watches, and scantly clad women in their clips just to sell (and even then only to 14-year-olds) doesn't deserve to be heard. Not by my ears at least.
It really is a testament to the US' conservativeness (and conformity), if you take a look at their music. Half the scene is dominated by hiphop and R&B. All other styles have to fight just to survive, because most Americans won't even consider listening to anything else. The only style that still has a slight chance is perhaps rock. Stuff like electronic music, which is by far my favourite kind of music, doesn't even get a consideration. Artists like Basement Jaxx, Faithless, even the Chemical Brothers are way too unpopular in the States. They deserve much more attention, as they're a billion times more talented than your 50 Cents and J-Lo's. Then again, the way Americans are headed with their musical tastes, maybe it's rather them that don't deserve those artists.