Change Document thumbnail icon

Want to be able to change what icon shows in thumbnail view. For example, have a bunch of one note documents, when they upload they show as a notebook paper, I’d like to show as a one note icon, like with how word does

Simple use the “Upload thumbnail” or “Regenerate thumbnail” option in the detail view.

I can see where to do that for folder, but not for the files, is it in tenant or admin