cherokeemyluv

So I've been searching around for a suitable horse to lease and have been running into a slew of "warmblood" and "sporthorse" listings. The only issue seems to be that they are just irregular crosses that used to be classified as crossbreeds and now have fancier names. Kind of like the "designer dog" craze. It used to be a mutt but now its a schnoodle. I was wondering if there were any registries or rules for these classifications or if its just a free for all for backyard breeders to get a couple more bucks for their mis-conformed animals? There seems to be alot of breeding for spots or crossing with drafts for some reason. This is mostly TB country here of you ride english and QH if you ride western so I don't really know anyone locally that can help me out.