Kelly made 21 appearances over four years with the Nittany Lions.
"Not only is Jack playing at the highest level of the game night now — but he is extremely passionate about making young athletes better men."
Littlejohn joins the No. 7 recruiting class in the country for 2026, per 247Sports.
"Penn State enters this new era of college sports in a position of strength and ready to attack this new collegiate landscape."
Polydor is the third cornerback commit for Penn State in the 2026 recruiting class.
Colangelo joins the Nittany Lions after six years with Villanova.