As others have said, the list of amazing players dwarfs the list of disappointments, but even your list of busts is pretty crap.
Juzang was a good player who actually fit really well in Cal’s system and that I would have loved to see return.
Vanderbilt was amazing, he just got injured.
Diallo is an NBA player who finished his college season as a very respectable defender and with good stats overall.
Green was a great shooter and a good player for us, he just wasn’t a good point guard fit for Cal’s system, but he’s still going to be a solid college player elsewhere.
Wynyard was recruited as a bench player from the very beginning. He was recruited over every single season. It’s silly to call a player a whiff by the staff when he’s the lowest ranked guy on the team and the staff is filling his position with superior players every year.
So, basically your list is Kahlil Whitney. Amazing work.