First, a big welcome to Xmarks from Scotland.

You've got pretty much all of the sites I know on there.
All I'd point out is that our very own Matt Newsome recently wrote about how likely it was that some feileadh mhor had drawstring loops sewn into them.
Since originally they didn't have nearly the length of fabric as the sites you've linked show, all someone did was pull on the drawstring to roughly pleat it at the back and then belt and drape it to suit themselves.