UNT " should" have had several players drafted:
Brad Kassell, played 6 seasons in the NFL for the Titans and Jets, starting MLB for Titans during the 2004 and 2005 seasons.
Patrick Cobbs, played 6 seasons in the NFL for the Patriots, Steelers, and Dolphins.
Craig Robertson, played 9 seasons with the Browns and Saints. Starting ILB for the Browns 2013-15 and then for the Saints 2016-17.
Zach Orr, played 3 seasons for the Ravens. Became starting LB for the 2016 season & made 2nd team All Pro. Retired early due to medical issues.
Jamize Olawale, played 8 seasons in the league, became starting FB for the Raiders and Cowboys.
Jalen Guyton, receiver with the Chargers. 4 seasons in the NFL.
Kemon Hall, CB with the 49ers, 4 seasons in the NFL.
Jeffrey Wilson Jr, RB with 49ers & Dolphins. 6 seasons in the NFL.
I think if a player makes an NFL team, they probably "should" have been drafted no matter what the scouts say.