Are there different type of dietary fibers?

Yes: There are 2 types of fibers. The fruit type tend to be more soluble whereas bran, psyllium tends to be more insoluble fiber. Both can have effects on the GI tract.

See below: Soluble fiber dissolves in water while insoluble fiber does not. It can be metabolically inert and provide bulking.

Soluble, insoluble: soluble fiber as in oatmeal, sops up water and makes your stool firmer. Its great when you have diarrhea to make a firmer stool. Insoluble fiber is not absorbed and leads to more frequent stooling. Its best used when you are constipated and need to go to the bathroom more often.