Columbia Antiseptic Power (a baby powder and more, Columbia.com) is what I used for athlete's foot and for the groin area. We used it for the babies. It contains two or three antiseptics, (like Zinc Oxideboric acid, and carbolic acid, according to my old bottle.
Also used a preventative barrier cream, which seemed to help a lot. Columbia powder is the very devil to get, right now, as the supply chain has issues in the USA, and it contains talc and everyone is afraid of talc, even when it contains no asbestos. You can only buy 3 bottles from the manufacturer, right now. Not sure of Amazon, but check prices first. Amazon tend to have price gougers for sparse items. It seems logical that men have much less problems with a powder with asbestos, but what do I know? We avoid it, anyway. All the other brands I researched have gone to corn starch.
According to our pharmacist, one of the "cures" is one of the Lamictals, it's supposed to be the latest and best. It's Clotrimazole Cream USP 1%. My expereince is very good. Don't know if it comes in different strengths, or a prescription variety. The inactive ingredients seem okay.