Queta, Garza, Minott, J Walsh = all their futures depend on how they play next season. If they play well, they stay. If they do not, they go.
Add Amari Williams and Davison to that list also. All these players are playing for their NBA lives. Any of them could carve out a bench role on the 2026-27 team, but most of them probably won't.
Simons and Niang are is a bit of a different category. Both have enough of a track record to demonstrate that they can have a role in the NBA. But the same applies. No reason to decide now what you want to do with them. I suspect that Simons may prove more valuable in a trade for a big but I would like to see him play here before deciding that. Same with Niang. He is probably also traded but there also could be a role for him on the 2026-27 team (on a cheaper contract of course).
If I had to guess what will happen:
Simons traded at deadline
Niang survives and comes back on a min deal
Scheierman is back (team picks up option)
Tillman gone (not resigned if not included in a trade along the way)
Garza included in a trade along the way
Minott survives, option picked up
Davison gone
Walsh survives, option picked up
Williams, plays well and gets a regular contract for 2026
Brown, White, Hauser, Pritchard, Queta, Gonzalez, all come back.