My initial 53 would be this (Nichols, Hernandez, Nolan and Beej remain on PUP for now)
QB: Murray, Brissett
RB: Conner, Benson, Demercado, Dallas
WR: Marv, Wilson, Jones, Dortch, Fehoko
TE: Trey, Reiman, Higgins, Deguara
OL: Adams, Beachum, Johnson, Brown, Fro, Gaines, Williams, Jones, Fryar
DL: Calais, Collier, DRob, Stills, Tomlinson, Mustipher, Jones
OLB: Browning, Collins, Sweat, XT, Burch
ILB: ADG, Wilson, Walker, Simon
S: Budda, JT, DTD, Blount
CB: Melton, Williams, Johnson, Jones, Burke, Hall
STs: Ryland, Gillikin, Brewer
This isn't a hard 53 to put together with Nichols, Hernandez, Nolan and Beej on pup. The only arguments are at the fringe like Deguara or Vokolek, or Blount or Crawford, or Hall or Clark. And ultimately it doesn't matter as whoever doesn't make it will stick on the PS.
Guys like Mustipher and Fryar only make the 53 while other teams settle their rosters and then he'll get kicked to the PS when Nolan and Hernandez are healthy.
Nichols and Jones should be heavily shopped. I'd expect one of Browning, XT or Beej to be moved on via trade.