Nas(longevity and lyrical ability)
Pac(impact, influence, content)
Jay Z(Longevity, catalog)
Kendrick(Catalog, diversity of topics)
Biggie(Impact, Lyrical Ability)
Scarface(Content)
3k(Originality)
Cube(Storytelling, undeniable run)
TI(Catalog, Impact, Song Writing)
Pusha T(Longevity, Lyrical Ability)
I would probably have Ye and Drake in there if they didn’t have so much of their material written for them. They would take out TI and Pusha. Others that are close Rakim(No Longevity, Pun(Not enough Material), Lupe(too many below average albums) Eminem(Same as Lupe) LL(Same as Drake and Ye) Ghostface(Close) MF Doom(Too Niche)
This list looks different if we are just saying Hip Hop Artist Catalogs. But MC list I have to dock points for having known ghostwriters and other criteria.