Thanks @Haflinger , I'm impressed with all this info, and I've taken notes for my game :)
This far only 2 households bought horses, one rescued 3 animals so I did care more about their traits than breed, as they are going to be available to new Riders. It's an equestrian club running the place. The other household was most focused on buying a good looking horse for their good looking stable. I though I could see the breeds later on, but the game seems to hide that info once the horse is a household member (see next post).
Now I'm going to CAS to get a horse, it's the first time I check them in there. Been busy building. Love this pack and the world!
