If this was posted somewhere already, my bad, but I missed these. I came across some more film study videos on this QB class similar to the JT O'Sullivan vids myself and others have referenced.
These, however, are presented by former QB Josh McCown who is, more importantly, the current QB coach for the Panthers who have since bought the #1 pick.
I haven't watched them yet, but I'm very intrigued by what he has to say about these kids given his and the Panthers' position. These are from January, before the Richardson hype train, so I don't think he's included unless I missed it. Also before Reich I believe.
Will Levis:
https://youtu.be/RXvUle76DZc
CJ Stroud:
https://youtu.be/xleNH2o9VfM
Bryce Young:
https://youtu.be/6ntaSrHk34g