All
@Feverdream was pointing out is that if you cut any one of those players from the 53, you still need to pay someone else to be on the 53. So if you state Munson is $1.1m in cap relief to cut him... He's not really. If you have to pay the guy that takes his spot on the 53 $800k, you only really saved $300k against the cap.
The money saved listed by the OP
are accurate, but you need to think of them as a discount from the eventual bill, rather than cash in hand.
If we could sign a LB to take Munson's spot for $4m, cutting Munson would offer $1.1m discount from that $4m from a cap perspective. If you're thinking that cutting Munson today would be $1.1m erased from the total cap bill, it would not, because you'd have to pay somebody else to be on the 53.