Depends on your definition of lyricist. If you mean just raw heat in the Canibus way, then easily Crooked. That is his dimension, that is what he does in his sleep. But if you mean pure poetic lyricism in the Nas type of way, then Kendrick. Game is a dope, style shifting mc but he shouldn't be anywhere close if we talking lyricism. Overall, I'd put Kendrick because he can do both types of lyricism whereas Crooked will aggressively out bar him.
Smh please post a "hot" Kendrick verse or bar