I only know what I know so prove me wrong. I think almost all other forms of art, from music to television and cinema to sculpture and mixed media and painting to dance all have proletarian channels, but fashion is almost exclusively for the wealthy. Arguably also it seems to me that a lot of culinary art tends to cater to the wealthy too, so fuck that as well.
Interests in theatre aren't inherently haute, you can see most Broadway shows in NYC for 30 dollars if you know what your doing, and off broadway stuff for less.
The only hobbies that are always going to be haute are ones that require very expensive equipment, which generally speaking, only applies to certain sports.