Here is the NFL.com draft analysis on Thieneman:
Draft Projection
Round 1
NFL Comparison
Jevon Holland
Overview
Savvy three-year starter with NFL size, speed and alignment versatility. Thieneman is an extension of his defensive coordinator, aligning and adjusting the secondary to motion and pre-snap shifts. He’s an instinctive, rangy safety who can roll down into big nickel or robber positioning. He has a good feel for play design and route concepts in zone but has average change of direction to match breaks in man. He’s not a big thumper near the line, but he rushes into the action with a relentless pursuit that should allow him to keep stacking high scores in the tackle columns. Thieneman checks important boxes for teams looking to add versatile playmakers in the secondary.
Strengths
Rare production (306 tackles, eight interceptions) in his three seasons.
Size/athleticism combination to play all three safety positions.
High coverage IQ with a strong feel for spacing and route structure.
Range and ball-tracking ability to play over the top.
Rarely takes eyes off the quarterback for extended periods of time.
Persistent pursuit of the football keeps him near the action.
Reads run and races downhill to squeeze work space for ball-carriers.
Recognizes run track and bolts to the junction point ready to meet the runner.
Weaknesses
Man coverage begins to show cracks as the route progresses.
Average short space change-of-direction quickness.
Step slow to adjust his pursuit angles to the perimeter.
Needs better hand usage to stack and play off blocks.
Full speed alley running leads to greater hit/miss variability.
Average stopping power when bringing down bigger bodies.