Hi April --
Very sorry for the extreme feet issues. Does your podiatrist have any recs at all for keywords or ways to troubleshoot a shoe that's close?
I'm betting you've already tapped into the Barking Dogs blog but if not, it's here: https://www.barkingdogshoes.com/
Also in case you don't know -- toe boxes can be stretched both up/down and side-to-side at equipped shoe repair shops.
[They have to be left on for at last 24 hours, so there can be a queue. DIY is the old potato + wet shoe trick or "stretching" liquids but for me the pro worked a lot better.]
I get into trouble with my various needs: cushioning vs extreme arch support vs flexibility (some brands have great support but the soles are very stiff etc). For me the easiest fix is arch support (Pedag) so I look for the other needs first. Don't know if an approach like that might work.
I don't think The Flexx has been mentioned yet, and they're doing perf'd closed-toe for spring.
Good luck in the hunt (and waving to Peri while I'm here!).