Sexton has been OK, but hasn't really lived up to that contract.
Agbaji is still TBD (was a 1st round pick)
Lauri has been good for them, but ultimately came down to earth this season and lost a lot of trade value. He got that huge extension, which may become a negative in the future. He's a good player, a fringe all-star, but I think he's just a good player on a bad team and won't have nearly the same impact on a team with more options.
The 3 firsts don't look to be the potential lottery tickets they did when Mitchell has the chance to leave. He signed an extension, and the other 3 guys are under contract for years. Barring a couple of major injuries, none of those picks will be in the lottery, and the swaps will be very late firsts, which won't convey. Seems like the Cavs gamble paid off with about 4/5 years of peak Mitchell at least.
I don't know if that's great value for Utah overall. I think the Knicks were offering about the same in picks, but not players. Maybe their FRPs would have been more valuable, but it's hard to say given they are 3rd in the East. The Knicks would probably be a whole lot better with Mitchell instead of Bridges though. Not sure if they make the KAT trade too in that scenario.