We don’t use soy either. I’m sure any non dairy milk would work.
Here is the chocolate pudding recipe, finally found it again, we didn’t use soy milk. https://www.allrecipes.com/recipe/166611/alexs-raw-chocolate-pudding/
I made this pot pie and it was delish! Our family is *mostly* Vegan. Eating lean meats only a couple times a week. I even have a raw vegan chocolate pudding recipe if you want it