Opinions vary (and we've debated it a few times here also) but my opinion on talc is it's safe as long as you're not inhaling much of it. Breathe through your nose and try to time your breathing a bit when sending up clouds of talc. Empty a bit directly into your hands and then rub it on instead of hosing yourself down, to keep the talc cloud to a minimum.
Corn Starch and Talc are really the big two. Other products are usually based on that with other things added in. If you want to avoid the two, you're probably going to have to go with lotions and cremes. I've had mixed experience myself with them, as MOST cremes seem to attack adhesives in diapers, the adhesives that hold the back sheet to the shell, leak guards to the back sheet, or (most often) elastic to the leak guards or leg gathers.
I find that my skin gets irritated very fast if a leak guard elastic band "escapes" from the leak guard. It pulls tight like a guitar string and starts digging into my skin in the crotch, skin which has already been softened by the presence of the lotion. I've also had leak guards separate from the back sheet, or back sheet separate from the shell (which causes sap to get everywhere, frequent with bambino), and DC Amore Kitten for some reason are extremely prone to losing all three of their elastic bands in the leg gathers if exposed to lotion. Diapers with "double elastic bands" in the leak guards (like ABU) seem to be much more immune to escaping elastic bands in the presence of lotion. So if my skin is experiencing eczema and I need to dump on lotion overnight, I go with ABU space. The back sheet may come loose from the shell, but at least the leak guards won't dig in.