Rap got huge just a few years late for me to be all-in like a lot of folks. By the time it was really taking off, I was in grad school and super busy and not really catching much new music.
While not a huge rap fan, I have appreciated rap through the years, all the way up to recent times.
Regarding "best ever," why do so many people take these things as objective? It's really quite funny to me. Clearly everybody has different tastes. Why give somebody else crap about his/her top 5?
Regarding Eminem, he's going to polarize on any list. He's white in a black art. Some people will hate him for that, and some will love him for that. He won't be fairly assessed either way in this world - maybe in a few hundred years.
Even for music forms that I don't particularly like (e.g. Jazz), I generally understand the appeal. I see the talent. I understand that somebody else will find the music entertaining.
There's one exception to that. It's in rap.
It's Drake.
I've listened to a bunch of his stuff and there's not one song that I've listened to that compels me to think, "I understand why people would like that."
People can argue about rise and fall of rap and all that, and I don't know what meaning to give it in that regard.
I just know I can't figure it out. Certainly could be me.