Wylie is the first linebacker to join Penn State's Class of 2022.
Dunmore entered the transfer portal back in October after withdrawing from the program earlier that month.
After a 15-month closure, the museum will be open six days a week from Tuesday to Sunday.
Oweh's contract is expected to be a four-year deal worth $11.3 million.
Cobbs played two years at Lackawanna College before graduating this past May.
Penn State football lettermen LaVar Arrington, Paul Posluszny, and Steve Wisniewski have made the 2022 College Football Hall of Fame ballot.