I'm ideally a medium tall (MT) but that size is a unicorn (doesn't exist). LT sometimes doesn't look too baggy but they're so rare I don't even bother searching for them in most clothes stores.
When a store has a big and tall section it's literally big AND tall, not normal and tall. If you are 2m (6'7") tall you better weigh 300lbs if you want a shirt that fits.
I like TallSlim Tees [0] – pricey for what they are, quality-wise, but for me it's worth it to get a good fit for once. I have a similar build to GP (191cm, ~77kg) and wear a size medium in these. Very nice not needing to clad myself in a billowing sail just so my shirt can reach past my belt
Is it such a surprise that customization is required to accommodate three standard deviations? People of that height aren't comfortable in every automobile, either.
If you're really fishing for tall sympathy on this thread, of all possible threads, you might want to avoid the word "normal"...
Seriously, as another skinny-ish tall person, I wish "L-Slim" was a thing. That would be so nice. I'm tired of wearing shirts that are way too wide.