i know to put the normal map in the

[untold sentinel]

Is it a detail mask map or some other mask map?

I can't try to guess from the texture names because they're cut off

You can zoom the project view back so that it displays full file names as a list

[untold sentinel]

this could be a detail normal map, but I have no idea from here

[proven trench]

that is a normal map

[untold sentinel]

... but for what purpose

A mask map can mean a detail map mask, or a channel packed map which contains many different masks, for roughness, metallicness and whatnot

It probably has different maps on each color channel judging by the fact that it looks green

[proven trench]

this is a normal map just to clarify

[untold sentinel]

That seems clear enough already
As you've already read in the documentation, detail maps can be normal maps

The "detail" part refers to its purpose, not its type