S&W made a model called the 1950 Army, not sure if it got the new Model Number designation or not. It was basically the Model 1917 upgraded with the new action.
Colt made the New Service in a commercial finish, don't remember if they called that a M1917 or not.
I have no intentions of letting S&W get ahold of my 624, but it would be neat if they offered to turn faiing 624's into any other suitable N-Frame (such as .45ACP) instead of scrapping it and giving the owner the option of a current production pistol.
The .45 ACP Pitbull from Charter Arms is the newest of them all. The couple I've seen on Gunbroker have been going quick. I'd like one, but my .44 Bulldog makes more sense as it is easily reloaded with speed strips or speedloaders. One thing about the Pitbull is they use extractors, great for loose round shooting but not great for a quick reload.
Not sure if it fits your criteria, but a number of these were converted to take .45acp brass. And shot with .45ACP ammo by people who didn't understand.
Any number of Ruger Redhawks in 45 Colt and Super Redhawks have been "cut" to take 45 ACP in moon clips. Not a production option, but they meet the criteria of the O.P., if loosely read, I think.
Yes I love my 625 and the 325PD is interesting. Scandium Aluminum alloy frame and Titanium cylinder.
The S&W Governor will shoot 45ACP with moon clips, which I think are the same ones used by the 625 etc.
I have a couple of the Taurus 5 shot DA revolvers. The Tracker and the Total Titanium under it, which is all Titanium except for the barrel which is a rifled tube of SS and the lockwork which is steel. Sadly Taurus makes neither of these anymore.