I have always considered the two ponies on the right to be blobtops. I've just picked up the green example on the left - while the top is not exactly as "blobby" as the insulator in the middle, the front and back stars are a perfect match. Star experts, what do we have here on the left?
Thank you to the Burger brothers! The green insulator at left and its ice green identical twin are not a blob tops in their truest form, but a variant. The insulator at right is also not a true blob top, also a variant.