Williams is more of extend the play, sounds like he's potentially better than Fields at processing, beat blitzes whereas, Maye is looked upon as less of a creator and more of a pocket passer.
https://www.profootballnetwork.com/drake-maye-draft-scouting-2024/ -
Maye is a measured, precise, and instinctive passer who can test defenses in the intermediate and deep ranges. He’s better than Williams at maintaining pocket discipline, staying on rhythm, and taking what’s given in the short range, and he can carve defenses apart in the intermediate range with his anticipatory high-velocity javelins.
In fact, one of Maye’s most exciting traits is his actionable field vision and anticipation. He identifies leverage advantages in coverages instantly, and he can capitalize just as quickly.
Maye actively uses his eyes to freeze DBs, has an understanding of how to open the field at his will, and has the rocket arm to take advantage. And he can also multitask and manage space in the pocket while processing the field.