Lane is the first safety and 17th player to join Penn State's recruiting Class of 2024.
Gilliam received offers from West Virginia, Virginia Tech, Indiana, and Texas A&M, among others, but chose the Nittany Lions after his official visit on June 2.
Plazz is the sixth offensive lineman of the Class of 2024.
Laubach will arrive at Penn State after being selected by the San Jose Sharks in the 2022 NHL Draft.
Cooper will arrive at Nova Southeastern as it rolls off a 36-17 overall record in the Division II Sunshine State conference.
The event will take place from 12 p.m. - 4 p.m. on Saturday, June 3