Live in Northern California. Have to pic out our outdoor shower fixtures. The outdoor shower will have 3 purposes...shower for pool (not shown, but to the right), dog shower, and before/after going in the hot tub.

There is an ~2.5 ft soffit/eave on the house so the shower fixtures will not get direct rain on them. Give the use cases and needing a hand sprayer for the dog, any recommendations of brands and models to go with? Do I need marine grade stainless steel?