I gotta disagree. I think both Mayfield and Rosen are worth trading into the top 3 for.
Mayfield may lack height but hes a proven gamer and QB that can go through multi progressions and sling the rock like wu tang from the pocket. Has been the most clutch of the 3, last QB that was clutch in the draft was Watson, he adapted nicely to the nfl.
Rosen is a typical pocket passing QB and is prob gonna have the highest floor of the 3. If it was madden, Rosen would be the highest overall after the draft but Mayfield or Darnold might have the 'superstar' progression traits.
Darnold has the highest celeing but also needs the most work of the 3. This doesnt mean hes bad, he jus has more to work on but everyone says theres more to develop. He can be mobile out the pocket and make big throws. Has to clean up the INTs, the NFLs windows are even smaller and unforgiving.