Venerable is a three-star defensive back from Maryland.
Bam's older brother, Anthony, is a redshirt freshman defensive lineman for the Terps.
He previously committed to LSU in December.
Penn announced he would play at LSU.
Williams is the top-rated quarterback in the class of 2021.
The three-star product joins the Terps from nearby St. John's College High School.
The Gaithersburg native becomes the Terps' highest-rated class of 2021 recruit.
The Terps added two recruits to their 2021 class and one to their 2020 class.