Nice guidelines and data.
Locally, we have 4 - 2018's that are currently 90+ guys. None, are committed and one has been in front of PG. After the PG event was invited to two UOV's.
Do I believe the others are D1 prospects? Should be, but you never know. Likely, the only schools that know of them is with in a 2-3 hour radius. So if they desire to play D1, they might get recruited but from my perspective 90 means very little and these local schools have their private fishing pond, unless they go on a national level to pressure recruiting.
Many kids in my area choose JuCo for many reasons, playing time, more games and ability to be drafted sooner.
At the same time D1 rosters tend to turn over about 50% of the previous years incoming class.