Those are all really nice. I'd agree that the "Normals" are YB's. The coloration and belly pattern look like a lot of my YB's. As for the others, if I had to guess, I think there's a possibility in the second lesser. I don't have much experience though with the lesser stuff. I have a couple different pinstripes and the are very different. One is very dark and the other is very light. So the pinstripe YB's you saw online may not give you the answers. You could try breeding an Ivory male to the pinstripe female. That would give you all YB's and if you get an Ivory, that will answer the question for sure.Let us know what you figure out in the future.