This is probably your best bet as it keeps it simple and could be found in vintage or classic styles.

I have been wondering the same myself. I saw some diverters on Alibaba that “seem” to allow any combination of outlets to be run. However, I’m starting to look at Kohler’s digital systems as those appeal to my nerdiness. And, of course, with those types of systems, you can go way over the top with how many spigots and sprayers and jets you can get going.