Unless Disney has recently come to their senses, almost all hot dogs are the same 60% chicken/40% beef blend. They have gotten big on toppings to disguise the awful taste, but I eat my hot dogs plain. The buns on both hot dogs and burgers have been wheat and oversized and are often called "crumble buns" because they fall apart. Not what you'd expect from the "Great American Theme Park!"
In my personal quest to find real hot dogs at Disney, Somerfest in Germany (Epcot), Wetzel's Pretzels in DTD, and a Mexican fast-food place at DTD have all-beef hot dogs, but none have a traditional white bun.
Universal Studios seems to be outclassing Disney in the food department and has a Nathan's that I expect has real hot dogs. Who'da thunk!