I'd just like to #interject for a moment. What you're referring to as #Dragon cummies, are in fact, Fire/Flying cummies, or as I've recently taken to calling it, #Fire plus #Flying cummies. Charizard is not a Dragon-type unto itself, but rather another free component of a fully functioning Fire type made useful by the Fire moves, effort values, and base stat components comprising a full #Charizard as defined by Prof. Oak.
Many Pokémon Masters run a modified version of the Fire-type every day, without realizing it. Through a peculiar turn of events, the starter Pokémon Charizard which is widely used today is often called Dragon type, and many of its users are not aware that it is basically the Fire-type, developed by the Fire Project.
There really is a Flying type, and these people are using it, but it is just a part of the system they use. Flying is the secondary type: the #wings on the Charizard that allocates the Pokemon's resources to the other moves that you use. The #typing is an essential part of a #Pokémon, but useless by itself; it can only function in the context of a complete Pokémon. Flying is normally used in combination with the Fire-type: the whole Charizard is basically Fire with Flying added, or Fire/Flying. All the so-called Dragon type Charizards are really combinations of Fire/Flying!