That data you are looking at, which is pretty good info, looks at all players on the roster and also gives each player a numeric rating. I was just counting belly buttons, so to speak.

One shortcoming of that Talent Composite is that I think it weights freshman the same as seniors, etc. They probably could weight upperclassmen differently than underclassmen to get an even better snapshot of roster quality.

But it's a solid tool.

Here's a link to one such Roster that I used:
https://247sports.com/college/virginia-tech/Team/Virginia-Tech-Hokies-Football-21/Roster/