M41 Question?

[Drm50]

Is there names for the different back sights on 41s or just go by rotation?

 

[MauleN12VR]

Model 41 rear sights

Here are a few pictures of the variations that I have found. I haven't found one of the revolver sighted barrel yet...

 

[Kp321]

The top sight in the picture is referred to as a M-52 sight. Next down is a Millett, botttom one looks like a Kensight.