I golf in the wet Pacific Northwest winter and have used several rain jackets from baggy to form fitting and from cheap to expensive. Baggy gets in the way and cheap leaves you wet in areas. Form fitting restricted my movement because I am not young slim and trim anymore.
I rowed in college and remembered my rowing jacket. That was a great piece of gear. Lightweight, good water resistance, and covers my back side when bent forward.
I found Boathouse online with goretex which was a must for me. Used it yesterday in off and on again rain. It worked like a champ and I could swing like I wasn’t wearing a jacket.