Ellis played for the Nittany Lions from 2019-23.
Hardy was drafted No. 219 overall in the 2024 NFL Draft.
The Packers drafted King in the seventh round of this year's draft.
Mustipher and Smith were one of nearly a dozen Nittany Lions cut by NFL teams through Tuesday afternoon.
McSorley appeared in two preseason games with the Commanders.
The Nittany Lions will face Iowa, Michigan, Michigan State, and Maryland, Nebraska, Illinois, Ohio State, and Rutgers.