For wipes I use
Cheeky Wipes reusable wet wipes mostly, Though I have been making my own as well with bamboo towelling scraps from my sewing, these get soaked in my own solution.
I boil filtered water and allow it to cool slightly (the heat helps other ingredients break down and mix and also seems to last longer before smelling stale) in which I dissolve some coconut oil, a couple drops of tea tree and lemon essential oils, and a dribble non soap based bodywash which has a few other oils in it (I like the smell and it is moisturising, soothes itchiness and seems to help combine it all though this may not be accurate).
I do occasionally use Pampers sensitive when out if I don't want to carry reusables around with me.
Creams: I use Bepanthen barrier cream, not all the time but when I feel I might be needing it or if I know I might be in a wet nappy for a long time or if I know I'm going to mess. Sudocream for healing any smaller rashes that may crop up and Metanium if a rash gets real bad.
And for Powder I use Cuticura mildly medicated powder as I found J&J tends to dry my skin out a lot and this one doesn't.