Americantall.com is where I’ve been buying from recently. Do you have another option? ’ I’m 6’4" and 200 pounds. A typical large is too short. XL and XXL is wider and not longer. I need a place to order a Large X-Long.
Not the easiest option, but you can sew your own clothes.
Https://Freesewing.org was created by a large guy who couldn’t find good clothes in his size, so he started to design his own ones.