Williams is the top-rated quarterback in the class of 2021.
Maryland tested 105 student-athletes in its original screening.
Other universities have announced testing results, including Clemson, LSU and Kansas State.
Baker replaces Cory Robinson, who left the program in March.
“We remain optimistic about the return of fall sports," athletic director Damon Evans said.
Akingbesote is the fourth four-star recruit to commit to the Terps' 2021 class.
Taulia Tagovailoa is a former four-star recruit and the brother of now-Miami Dolphins quarterback, Tua.
The three-star product joins the Terps from nearby St. John's College High School.
The former All-Pro running back likened McFarland to a former Steeler great.
Lester served as Maryland's head coach from 1969 to 1971.