They are fairly easy to find, though I'm not certain of their ingredients. They have Nestle Triple Blast popsicles as well as some Edy's all fruit strawberry and pineapple popsicles.
Did you know that non-dairy ice cream is available too? The ice cream parlor on Main St carries Tofutti and Rice Dream. I think the Fountain Shop at Epcot does too. Most TS restaurants do as well.