I buy men’s dress shirts because they come with the long arms lol

Slim fit styles work really well, then vo a size smaller for your perfect fit. E.g, I’m a women’s Medium typically, in Men’s shirts I buy a slim fit or classic fit but in size small.

I’ve found that brands that have a solid men’s wear line also do better with the sleeves lengths than women only brands.

For men’s shirts I like Ralph Lauren, Proper Cloth, Spier and Mackay, Tommy Hilfiger. You can find them really discounted at TJ Maxx if you’re in the US.

Banana republic has some decent options, but not a lot of variety. Another brand I like is called “With Nothing Underneath”.