The ketchup and Mustard is a NLR pelt, older than a clown, which is more in the rainbo family. Also the typical K&M has a white base and the typical Clown has a dark base, nearly black. A Bionic Rainbo is like the above marbles but also added are other colors like green and can be shades of purple to pink. Possibly others as not all examples have been shown publicly. They usually seem to be a bit twisted up and pulled in pattern. They were not made in a swirl AFAIK. I've seen clowns from around 9/16" up to around an inch. I don't recall seeing any in the 3/4 to 7/8" range but they may have made them, I don't know. Hope that helps some until someone more familiar with them comments.