Definitely Nas.
One of my favorite MC's of all-time, but after I Am, my guy has at least 9-10 albums that I pretty much pretend never happened, and never listen to. The drop in quality was wild, compared to the early classics, like Illmatic and It Was Written. I honestly listen to his unreleased sh*t, more than the later albums.
With Jay, his catalogue was weird, because he would have some of his best sh*t on albums that had some of his wackest sh*t. But he only has maybe one or two albums that I think were wack overall and don’t even bother checking for anymore (Kingdom Come and Magna Carta Holy Grail). Nas was dropping sh*t that had people confused. So there's a whole period of his career that I just act like never existed because I was so disappointed in what he was making.