Of those, only 3 really appear to be rule 5 options, in my opinion.
Michael Papierski. Switch hitter spent 2021 at AAA. According to Astros Future, he is the best defensive catcher in the system and pitchers love throwing to him. He improved his BB, K, and linedrive and ground ball rates this year. His hitting stats were close to league avg (98 wRC+, .754 OPS) which is good for a defense first catcher.
Scott Manea. MLBpipeline #18 prospect. Older player will be 26 next year profiles as solid at both offense and defense but won’t stand out in either.
Yainer Diaz. MLBpipeline#13 prospect. Hit first catcher who is truly talented with the bat. Lacking development behind the plate but the Astros liked him enough to ask for him in the Straw/Maton deal. Probably doesn’t have a chance to stick if selected because his glove is behind his bat and has not played above A+ ball.
Bermudez is the one I would hate to lose – a long shot to stick anywhere, but as mentioned before, a bad team can hide someone in the bullpen and use him only in mop-up situations. I think he could turn out to be something special.
I’ll hazard a guess as to roster moves with just a short bit left until the deadline:
Jeremy Pena gets added, taking the place of a dropped Freudis Nova;
Jonathan Bermudez gets added;
Shaw Dubin gets added;
To make room for the pitchers, they’ll drop a pitcher, with the three most likely candidates being Enoli, Josh James, Rafael Montero, and Jairo Solis. Solis had Tommy John in June last year, so he’s my guess.