Don't listen to a bunch of rap, and most that I do aren't pure rap either.
Here's one I remember at the top of my head.
The Rap of China produces many great rappers imo. Some notable ones are Gai, Jony J, Nineone, wang linkai. Most mainstream rappers gain fame through the various rapping variety shows. (after journey, Gai, Jony J etc)
Couple years ago german TV show "Neo Magazin Royale" made a rape history mashup for german songs. Starts at around 1:00. I quite enjoy it as it gives a good overview.
But it's not reflecting the trend from the last 2-4 years with rappers like Raf Camora, Capital Bra, 187 Straßenbande rising.