Rakim
To be fair, none of this lists are ever based on who's the nicest/can rhyme the best. These list would consist of 99% of rappers nikkas never heard of lol.
The thing with these list everyone has to understand is it's always done by a collective. And some hold certain things heavier than others in terms of importance. That's why there will never be a consensus list that everyone agrees with.
When I make my list my two main questions are: Whose music did I enjoy the most and how much of their music did I enjoy. You need to hit on both marks to be in my top 10.