Check out Texas Standard.

While not a Cuban shirt, I do find these fishing shirts both comfortable and very affordable. The square hem looks much better untucked than versions from Columbia and others with a tapered hem IMO. I have several in both long and short sleeve variants.

Habit Shirts

Recently discovered Dixxon Flannel Co. I ordered one of their short sleeve bamboo fabric shirts liked it so much I ordered a 2nd short sleeve and a long sleeve. Very lightweight and their plaid patterns tend to break up any outline of printing.

https://www.dixxon.com/collect...boo%20Short%20Sleeve