Can’t you do a charge back? Isn’t this a key kind of protection that credit cards give you?
Fortunately, the mid-sized places I've been at generally trust the employee's story when it comes to expenses -- at least unless it becomes a pattern.
If my workplace took the hotel's side for a bogus charge, I'm not sure I'd want to stay working there...
There are lots of small operators, so I doubt that there's some industry wide list.
But there are only a few large operators. I'd be shocked if some of them didn't share info.
Partial chargebacks would be an interesting concept in this case.