The ideal is for the rider to have a long leg lying close to the horse. Us short-legged folk lower our stirrups as much as we dare, but in my case that's not long enough!
The various hunter types I named are the different titles of classes in a horse show, all of which judge "hunters" - that is, a horse that is ridden to hounds. They are ridden in a ring, one at a time, over jumps built for the occasion. "Handy hunter" judges a horse on his ability to negotiate obstacles nimbly - have a lot of tight turns, difficult stride distances, etc. "Working hunter" judges a horse on his suitability for the actual hunting field - steadiness, pace, and smooth jumping. "Conformation hunter" judges the horse primarily on his physically meeting an ideal standard (usually after being ridden over fences, conformation hunters are shown in hand with saddle removed.) Combined training is a different kettle of fish - a horse is tested for his ability in three different disciplines: dressage on the flat, cross country jumping, and jumping in the ring.
Here we are cross country jumping:
You can see that my legs are just too short. But at least I'm still physically active at 50!