Tanner McKee QB is expected to drop into the top of the second round. Remember Drew Brees did as well so it's not like only top first round QBs are worth taking. If the Rams can't hold on to Mayfield, I think the Rams could draft a QB at 36.
Tanner McKee looks to be a scheme fit for McVay's offense. He's got elite height at 6'6" and an NFL quality arm with good overall accuracy. He's a true pocket passer who has shown an ability to read defenses. His flaws are mostly coachable issues that have to do with his progression reads. A year behind Stafford would really benefit him. I've watched him play and IMO he can be a quality QB given a decent team, coach, and system. He's got good movement skills though his throws on the run need to be cleaned up as technique issues.
IMO McKee gets a bad rap because of the quality of the team around him. He played behind probably the worst OL in the Pac12. But no different than Stafford and Goff if given a decent amount of time he's got the arm talent to beat defenses. Unlike a running QB Tanner being a pocket passer understands how to play progression read schemes.
I look at him as a one year developmental QB who has Goff like potential. The problem IMO is that McVay obviously doesn't like young QBs, but if Tanner is on the board at 36 and if Mayfield isn't on board I think the Rams could grab McKee.