I found the widest flat boot will work. (actually I only found one pair) I can't have pressure on my metatarsals and I can't wear socks.
During the summer I wear Birkenstock sandals. The wide width with the firm footbed. Just got their wool clogs which are nice except in the snow because of the open heel.
During the winter I also wear the wool Haflinger because I can't wear socks. I can't walk distance with the Haflinger because of the pressure on my metatarsals.
Just a reminder, the firm footbed works best for me but everyone is different.
I have 4 or 5 pair of prescription orthotics I can't wear.
Wishing you well on this journey. Hoping you will find shoes which will allow pain free walking. God Bless You!