I'll name 2. One is flat out underrated and the other gets a ton of love but in terms of where he should rank on the all time lists, gets severely underrated considering how fricking skilled he is.
Flat out underrated
Styles P-who knew he would be the best of The Lox?
Guy who is insanely skilled but yet never gets the credit he truly deserves
Busta Rhymes-how many rappers can boast the number of quality albums he has and can match him skillwise and yet not get mentioned at all among the greatest rappers ever? The guy has so many memorable songs and especially verses. If I had to name 5 rappers I would not put on my song if I didn't want to be outshone, he'd be one of them. He's a classic scene stealer whenever he guests ona track. I'm admittedly not a fan of all his albums or even a huge fan of him at all but I give credit where it's due and he deserves a ton