There is one topical solution that I have found to work: Safetec Sting Relief wipes.
I got jock itch from the gym after shaving my scrotum. It was incredibly painful and would not go away. I tried everything. Topical fungal creams did not work.
I'd heard that menthol would relieve the pain, so I tried these wipes. They do not contain menthol, but they do contain licodaine and alcohol, which feels like menthol.
My jock itch cleared up in a week. So now I'm sold.
Warning: the first several applications really burn. Obviously, you're applying alcohol to skin made raw by fungal infections. I kept something on hand to fan myself and cool down the burn after application. But it's worth it because it works.
If anybody has this problem and wants to try these, you can order them online for about $5 + shipping. Safetec markets these as insect bite relief wipes, but I now swear by them for jock itch.