You have me beat. The High Standard Crusader is pretty rare in any caliber.
Taurus offers the Tracker in 45 Colt. I think they also have a snubby in 45 Colt.
Did Llama make anything in 45 Colt?
Since you list varients as well as basic models, have you considered the 1909 Model Colt new Service? It's actually chambered for the 1909 Colt 45 cartridge, but most people "think" it's chambered for 45 Colt. The 1909 Colt 45 has a wide rim like the original Schoefield 45 cartridge for the star extractor. The case is a smidgin longer than a 45 Colt case. It's loaded with a 300 grain bullet and a smokeless charge. The revolver was intended to accept a 45 Colt cartridge as a secondary backup, although it will shoot low due to the front sight blade being set up for the 300 grain bullet.
Guess I wouldn't mind having a DW in 45 Colt. When you get yours, I would be interested in hearing what the chamber diameter is. That is, is it oversized like most 45 Colt chambers, or reduced in size like the post pinned barrel S&W? I think the oversized chambers are responsible for the 45 Colt not having the best possible reputation for accuracy.