The National Football Post offered the most in- depth scouting report on Thornton. First, they began with highlighting how Thronton's physicality against defensive lineman makes him a legitimate prospect:
Strong and powerful, Thornton can tie up and eliminate man from the play with surprising ease when he blocks with base/leverage and uses his aggressively. Able to get out of stance and set to pass block quickly, he does a good job of pass blocking with base and "gets a good fit" with hands, which helps him to stop "bull rushers" in their tracks consistently.
However, if Thornton wishes to continue to improve as he joins the NFL, the most notable concern is his footwork:
Despite having the strength and athleticism to be a controlling blocker, Thornton struggles with consistency at times because he has a very bad habit of stopping his feet after he makes contact on blocks (Both run and pass). This leads to him bending at the waist and leaning and reaching to maintain contact, which in turn causes him to over-extend and end up losing the block and on the ground.