In his junior year of high school at Holy Trinity Diocesan, Brown put up 21 catches for 425 yards and five touchdowns.
Gonzalez recorded 18 catches for 322 yards and four touchdowns in 10 games throughout his junior season.
Cunningham is the 24th member of the Nittany Lions' Class of 2024, as well as the fifth defensive lineman.
Denmark is the first wide receiver to commit to the Nittany Lions' Class of 2024.
Penn State Athletics confirmed earlier in June that Barnwell had departed the program.
With Plazz' decommitment, the Nittany Lions now have 16 commits in their recruiting Class of 2024.