I can’t speak for AMS, but to me those pieces are more like lamellar and/or scale armor, and that’s what I intended those to be in my original work.
Chain mail would look a bit different:
Going for that chainmail look in Heromachine, I’ve used another item, e.g. here. What I do is I mask it onto cloth items from the Tops and Legwear categories, with varying degrees of success.
