Butler has been playing as a stretch 4 (Bonner's role), so your hope that he bumps Anderson is misguided.
Simmons guaranteed for 1 year, has not played well, has shot poorly and looked hesitant to shoot. He hustles on defense though and has been a good passer when he doesn't try to do too much, or dribble into traffic. I personally think he stays, but TBH he has looked very bad at times.
Fredette, unknown, has the longest thread dedicated to him, so no need to say anything about him other than he's still around and has not been cut.
Reggie Williams has gotten an extended look, can shoot the 3, but can't defend at all. I think he's gone, but who knows?
Ndoye, an athletic big center. Has shown potential on defense, but is very undeveloped offensively. He's a project with potential if he can improve in some areas. I like him, but we already have Boban as a project center, so I think he's gone.
None of the other guys are worth a second look.
Cuts should be incoming, per Pop.