Quinnen Williams and Jonah Williams are both expected to be early first-round picks, while the other two project as mid-round selections.
In 2018, Quinnen Williams emerged as one of the most disruptive defensive tackles in college football. He finished the season with 71 tackles and eight sacks, and won the Outland Trophy as the nation's top interior lineman.
Jonah Williams was a unanimous All-American selection after an excellent campaign at left tackle as a junior. He earned two first-team All-SEC nods over three years at Alabama.
Jacobs leaves the school after a career year when he posted 640 rushing yards and 11 touchdowns as part of a crowded Crimson Tide backfield. The three-star recruit was one of the stars of Alabama's national semifinal victory over Oklahoma.
Smith recorded 44 receptions for 710 yards and seven touchdowns in 2018.