Most artists if your counting like that, whether its a song, album, mixtape etc.
2 chainz has been grinding for 10 years tryna make it.
With multiple mixtapes and major label albums, major co-signs etc.
ASAP Rocky blew up outta nowhere with 1 mixtape and no co-sign he's the only one I can think of the top.
Everyone has that project that takes it to that other level..