Achilles, Diamond, Infinty, Passion, Soccer.
Pyramid used to be in there as a second P before they changed it a yellow hybrid. The item-producing dragons (maps, food, bombs, but not the GPDs) are also in the same group. At level 15, these particular dragons have a 25% chance of beating a high level Champion, while all others (except the Metal Dragon) have a 10% chance, regardless of level. A level 15 Metal Dragon has a 15% chance. Skeleking and Skelequeen would have fallen into the 25% group but, like with Pyramid, S8 ruined their Champ-battling abilities them by changing them into hybrids. These odds are only for beating Champions, they are average (or below average) fighters against other colors/types.