I have noticed in perusing the plain old peanut butter jar labels that many have sugar (in the form of dextrose, I think), or oils like cottonseed oil. (smallbites.andybellatti.com)
But just make sure to stay FAR AWAY from dangerous inflammatory vegetable oils like soybean oil, corn oil, and cottonseed oils which are used in so many processed foods these days. (truthaboutabs.com)
Many cracker varieties contain partially hydrogenated cottonseed oil high on the ingredients lists. (organicauthority.com)