Try Padders and Fly Flots. they are the only brands that I can wear.( I have awkward feet, but not neuropathy) The Fly flots have an insole that moulds to your foot and Padders have a removable insole, which can give you more room, but is soft and comfortable. Neither brand is high fashion. Fly Flots are mainly mules and sandals. you can get them on-line. Padders have a range of styles and are sold in good shoeshops and department stores. Check the website for stockists near you.
otherwise for very casual wear, the airsole trainers are comfortable. Even I can wear those.
Hope that helps
Hana