Blending Mode, missing alphaMode(s) in doc

I was looking for the value of ‘ALPHA_PREMULTIPLIED’ alpha blending mode when I realized that there are 4 blending modes that are absent from the documentation and from any description in the API (although pre-multiplied is self-explanatory).

Why are these modes not listed in the doc?
Could we at least add a small description to them in the API (if they are still to be used, of course)
Meanwhile, have a great day :sunglasses:

I guess it is mainly because they are all listed from here Engine | Babylon.js Documentation ?