I would add 3-4 year starter to the trait list. I don't know if that is a "trait" per se, but it's what they look for.
Also seems to like leadership, ideally having been chosen as a captain.
Edit: One guy that comes to mind is Austin Corbett, OL prospect from Nevada.
"Corbett was named a team captain as a sophomore in 2015...
Considered a team leader and determined worker. Went from walk-on to four-year starter."