I'll ramble a little about NIL:
NIL is totally individual based, not team or Athletic Dept wide. Now, a collective may decide that they would like to do NIL with all teams members or scholarship team members for a sport - usually a fairly small amount comparatively, perhaps a thousand or two a month.
The NIL deal has to involve a quid pro quo. Money going to the athlete in exchange for something like a social media post or autograph or training session for their sport. Those are just basic examples. But there must be an exchange of something for the NIL dollars.
Some members of a team may be making very big bucks from NIL. The starting QB at a school like A&M is very likely getting over $1 million per year from NIL.
NIL is totally individual directed. The athlete owns their own Name, Image, and Likeness and can be compensated for it. This was decided by the courts. The school or athletic department or team doesn't own it. The individual player does.
There are collectives, but those refer to the group of givers funding NIL getting their money together.