Hey! I too have widely spaced breasts (I can lay the palm of my had flat between them), and I’ve found that bras with wide center gores as well as some plunge styles (like the Natori Feathers) works well for me.
We’re only a couple of cup volumes apart (I wear a 34C), and most of my bra wardrobe is from Love Claudette. I also used to wear a lot of Betsey Johnson, though I’ve moved away from molded/padded bras recently.
If the issue is uncomfortable wires (which is also a problem for me in some styles, particularly full bust brands), you can also try a bralette. The biggest thing though will be trial and error and looking for bras that have a wide enough gore so your breasts are comfortable.
Hope this helps!