The only ones not mentioned by TheFarmFan I can think of are Lauren Avant who committed to Tennessee as a 14 year old, but she's a tough story because I believe she was in a car accident prior to arriving on campus and her body couldn't compete and transferred to Rhodes College, where she had a great career. She then was their head coach and now is the Head Coach at Lipscomb.
More recently, Finley Chastain and Sammy Wagner both committed early, Chastain in 8th grade and Wagner when she was 14. Since then, both those head coaches left, Finley has transferred high schools multiple times and de-committed from UT and Wagner is at Oregon.
Nicole Melious committed to Purdue as a freshmen, then Versyp stepped down, she later committed to Fortner at GT. She ended up never going to GT because of tragedy in her family, so she played her first years of college at La Salle then Seton Hall and is currently in the Transfer Portal.
Those are the only ones I can think of off the top of my head.
While, not AS early, Marcayla Johnson committed to Baylor pretty early, like in 2022 [which, I think had her as a sophomore] She remains committed to Baylor.. Nyla Brooks also committed to Tennessee as a Sophomore [2022]. Nyla Brooks is now going to UNC after Harper was fired.