C.L.
Please keep in mind that most baked products are going to have either Corn Starch or Baking Powder (which contains Corn Starch) in them.
Also, please be aware that MALTODEXTRIN can be derived from either CORN or WHEAT!!! So watch for that on labels.
I have not found a rice cracker that I like which does not have corn starch in it. :-(
Good luck! I'll be watching this thread for all the suggestions.
(BTW, I have a "sensitivity" to wheat, corn, oats, barley and rye!)