As 204cm human, I have also built a thing to scrape all the major brands for LT sizes.

It is deeply annoying we have to do this.

6'4" with relatively proportionate body-parts: buy the tall/long and you're likely good. At your height, all bets are off!

At my height, I have to do custom on a lot of things, though LT sizes can work for some pieces (short sleeves anything, some long sleeve items if the cut is intended to have longer sleeves).

It's a frustrating existence.

Can you share it?! Will save me the trouble …