First of all, it does not provide a good way of classifying design work. Second, it's perhaps hyperventilating to claim experience as the special province of any branch of design. Good designers serve an audience. They make or plan things for people to use. That use is an experience.
Architects are experience designers.
Product designers are experience designers. Even graphic designers are experience designers. I'm amazed and amused by the string of names associated with whatever it is we do and how they've evolved. IN high school I took Commercial Art classes. By the time I reached college, Architecture had become Environmental Design and Commercial Art had become Communications Design.