I've owned a lot of holster in my time. Here are a few of the flap type:

Lawrence K frame very fine Quality, lined, plug toe holster! The Heiser Colt SAA 5 1/2" as I remember. Both gone down the road.

Lawrence for a Ruger, I think but my 5" M&P fit nicely, both previous lifetime...

Three lined half-flap; Lawrence suede lined, plug toe holding a Triplelock target; Colorado Saddlery lined, plug toe, 4"K frame with a Combat Masterpiece; Lawrence lined 6' k frame with a K-38. I still own these.