Doctor caught 950 yards and 10 touchdowns in his high school career.
Adirika has four years of eligibility remaining.
Harris is onto his third program in four years.
The former five-star tight end didn't see any game action in 2025.
Williams was the No. 1 player in Pennsylvania in the class of 2023.
Smith played under Matt Campbell at Toledo from 2012 to 2013.