Thomas was the No. 22 player in New Jersey out of high school.
Siafa appeared in one game with the Nittany Lions over four years.
Hudson had three games with no receptions and five with just one in 2025.
Gilliam fought for a starting role this season.
Saunders missed all of 2025 with an injury.
In 2024, Lustig tutored a trio of All-Big Ten recipients in long snapper Tyler Duzansky, kicker Ryan Barker, and kick returner Nick Singleton.