Styles is a good shout.
I struggle to really think of anyone else. I know Black Thought is highly rated on here, but I don't think he's even half as nice as he was in the 90s. I find him quite dull and unimaginative nowadays. AZ same thing.
smif-n-wessun can still rap at roughly their old level, Krayzie Bone too. Maybe you could throw Fabulous and Cassidy in there, but then again those guys were never really elite in the first place. Ultimately no one can really escape the