By “comfortable fit,” I mean jerseys that still fit a little loosely on the body even when the correct size is chosen.
I’m 1.8 m tall and weigh 77 kg, so I usually wear EU size L.
With jerseys from Chinese suppliers, I have to choose size XL, which even when the length is right are very tight across the chest and upper arms.
If I go with size XXL, the jerseys are too long.
A sporty jersey with a slightly looser fit is the one linked here from the Austrian company Löffler:
https://www.loeffler.at/shop/en/30384-m-bike-shirt-fz-dimi.html