It's pretty well known that tees made using 1920s-era loopwheeling machines don't suffer from size changes, and age really well. But sadly these are now super expensive, and only offered by Japanese niche brands who bought machinery from American corps.
I remember visiting a Japanese clothes shop here in Dubai and I noticed their shirts were quite different in texture than anything else I'd seen. It was expensive too. I think it's called Superdry? Could that be one of the niche brands you're talking about or are they just using a unique blend of textiles? In any case, it's quite fascinating how sometimes old tech is simply better than what we have today.
I fins the fits really strange, especially for men. Everything there is a tall fit. And the quality is rubbish, I had 2 of the zippers on my winter coat to break after a couple months use. I expected more for a decently priced coat.