I agree with the general point of what you're saying but a few things:
1. Even 1 classic album is a great accomplishment. Most artists in any genre of music can't say they have even one classic album. By your own admission most of your list has at least one.
2. The longevity argument doesn't make sense for some of your points. Jada has no classic albums....ok cool, your opinion....but no longevity?
The same goes for Slick Rick. He came out in 1985, dropped a critically acclaimed gold album in 1999, and was still killing features against new rappers, 15 years later. Ok he ain't made noise in a while....but dude had a run for 15-20 years....what more do you want?
Also Slick Rick borderline pioneered story telling in rap. So you're not even taking into account other aspects of greatness.
3. Three people from your list died....you know the routine. Death = you're gonna be over rated all to hell. In any thing, not just rap, and not just the east coast. And "LAD" ain't classic.
I mean....people from other regions give artists GOAT passes for less shyt than this. Andre is my favorite rapper all-time but he's erroneously in a bunch of GOAT discussions with no solo album. UGK got one gold album in 20 years, but people claim they're a GOAT level group. Does longevity mean just putting out music, or do people have to care about it?
Fred.