Looks like it's a lot smaller than when I was going in the early 90's, I believe if I remember right there were at least 13 breeds represented. Among those were Charolais, the reason we went, and there were also Limousin, Gelbviehs, Beefalo, and possibly Santa Gertrudis. I know that at one point Santa Gertrudis were a breed shown at our KY State Fair held at the same facility.
Not to dredge up the old conversation but it does seem to fit. This is what happens when one breed and one hide color comes to prominence, other breeds and the genetic integrity of other breeds is lost or altered.