Hi J.,
I've used cloth diapers for two babies, and I think I have some advice for you.
I did use ointment with cloth. I don't know why you couldn't.....I have never heard that before. And in the past, just good old vaseline has worked best for my girl's rashes.
Perhaps all the different stuff you are using is inflaming the rash. Different perfumes/scents/detergents, etc. Maybe the new soap in the wipe solution. Maybe just switch to water for a while until it clears up, or make sure you rinse her tushie with water.
I wash my diapers once with a very natural detergent, one that I get at my local health food store, in cold water. Then I wash them again with the detergent and 1/4 cup of vinegar (this cuts the acid of the urine), in very hot water, with an extra rinse.
Try this stuff, and also, if you can, give her tushie time to air out.
GOOD LUCK!!