Not really. The difference is the size. A "youth" saddle is simply a saddle that fits better for a smaller rider. A pony saddle will fit on a horse but less comfortably. It will probably give the horse sores on his withers.
It is a saddle: saddle A Thoroughbred racing saddle is the lightest saddle used, weighing less than two pounds. saddle cloth A cotton cloth which goes under the saddle to absorb sweat. It usually has the horse's program number and sometimes, in major...
I tried out for an exercise rider job once, and I borrowed an exercise saddle, which was an english saddle stripped down to its components, basically. Very very lightweight, all the parts of a normal english saddle just a thin thin seat, little paddi...