best baby soap?!

mo

my babe has super sensitive skin + eczema. pretty much every soap and lotion we’ve tried make sure worse. johnson’s, aveeno, dove, cerave, cetaphil etc etc for lotion we were using aquaphor which helped but if we didn’t rub him down at least 3 times a day he would flare up and that crap is expensive! so we switched to eucerin which is wonderful and works great even only once a day! but i still can’t find a good soap! i’ve gotten to where i don’t even use soap just water unless he’s really dirty but that’s not gonna work on a long term basis eventually he’s going to need soap when he’s able to actually play and be dirty. any recommendations? cost isn’t an issue