I think any QB in college without a major NIL deal and who is eligible for the draft would consider leaving, even if he's a 5-6-7 rounder. Another factor is what next year's class looks to be. There is risk with staying in college obviously (and maybe you move up a couple rounds if you do).
For a QB who is 6'2" plus with a strong arm, I think teams would give them a shot even if they don't look great in college.