Are there shoes that are less likely to cause bunions to form?

Yes. As a rule, a stiffer, thicker soled shoe with good support and lower heel, is usually the best. Controlling abnormal foot function with help to slow the progression of the bunion deformity. Dr l.
Shoe. Shoes with wider toe boxes and smaller heels are less likely to promote bunions.
Wide shoes. Bunions can occur for a number of reasons including genetics and shoe wear. Narrow toe shoes likely will increase the incidence of bunions.