Is there such a thing as a swim bra that isn't just a bikini top? 38/40G

Some context: If I'm spending time in the sun, or kayaking or swimming outdoors, I like to wear a rashguard or UV shirt to protect myself since I have ezcema that is worsened by heat, sweat, and chemical sunscreens. It's just easier to cover up my chest and arms than slathering myself with mineral sunscreen that often rubs off.

I've been wearing a sports bra underneath the rashguard (this one to be specific) and it works okay, but I'd like to find something that's more swim-oriented, and (as I'm sure many of you know) finding affordable, supportive swimwear for large breasts is even worse than finding a decent bra.

I have projected 38/40G breasts that are fairly even in terms of fullness, maybe a bit more side-heavy, and kind of an omega shape. The bra I have that fits me best is an Elomi Morgan 40G.

Would really appreciate some recommendations! Both for a "swim bra" if that's a thing and traditional swimwear with support.