Jackson was released from his signing with Iowa State on December 10.
Olesh was the No. 1 player in Pennsylvania in the 2025 recruiting class.
Brahmer was named to the freshman All-America team by multiple outlets in 2023.
Wafle transferred in from Michigan in January.
Henderson picked the Nittany Lions over Michigan State out of high school.
Belgrave-Shorter lost his starting safety spot after only three games in 2025.