Palomino is a color of horse, not a breed. It refers to horses with a golden coat and a flaxen mane and tail.
This color can appear in many different breeds, such as:
* Quarter Horses
* Thoroughbreds
* American Paint Horses
* Arabians
* And many others!
So, there's no official "type" of Palomino, just Palomino horses of various breeds.