One caveat is Borgata in Jersey will match Caesars but MGM Grand in Vegas will only match if you haven’t ever had MLife before. So if you want to do this in Vegas be sure not to open an MLife account until you do the status match.

I can confirm this works (it worked for us at least). We were able to go Hilton Gold (from Amex Platinum card) to Wyndham Gold to Caesar’s Diamond to MLife Gold to Hyatt Explorist!

One other thing: we stayed at Planet Hollywood with the Caesar’s Diamond before going to MGM Grand to finish this crazy status match journey. I’m not a huge Vegas guy but I will say that for me (a non-smoker) the MLife properties were a lot better air quality wise than any of the Caesar’s properties. When we do go to Vegas in future we will almost certainly favor MLife properties.