[stupac2]

- the overall level of randomness of the whole process?

That's what I'd pick. On average you'd expect more highly regarded recruits to be more highly regarded players in college and the NFL, but that's going to require a lot of averaging given the inherent uncertainty and randomness involved.

In fact, I think the role of randomness in outcomes in sports is wildly underappreciated, as in the classic XKCD:

[stupac2]

- the overall level of randomness of the whole process?

That's what I'd pick. On average you'd expect more highly regarded recruits to be more highly regarded players in college and the NFL, but that's going to require a lot of averaging given the inherent uncertainty and randomness involved.

In fact, I think the role of randomness in outcomes in sports is wildly underappreciated, as in the classic XKCD: