I just discovered that the US Tartan Museum is located in Franklin NC.

https://scottishtartansmuseum.org/

On their site, they offer 3 kilt types. One of which is a box pleat, which they state was the accepted standard for kilts "from the late 18th century till the middle of the 19th century", when today's knife pleats took over. Its not clear why they offer this single type of "historic" kilt and no others.

I was only surprised because I have not seen that posted here, and there are plenty of Kilt Historians active on our forum.

I was curious about this change in tradition. Also found it curious that box pleating is what Pakistani kilts use. They're obviously easier to sew and use less material, which is why I presumed Pakistanis use it. I did not know there was potentially a historic tie-in as well.