Men's buttondown shirt pattern recs?

My partner likes wearing short-sleeve button down shirts and I've found some absolutely wild prints that I know he would just love to inflict upon the world. I've sewn tons of garments for myself but I've never dipped into men's clothing. My partner's a bigger guy, tall and broad-shouldered with some extra weight around the middle. I'm no stranger to pattern adjustments but I'd like something designed for a bigger frame if it exists! What are some of y'alls favorite patterns?