A recent exclusive interview with Warhammer III's lead writer Andy Hall has more or less given confirmation of this theory.A recent lore blog mentioning a 'Jade Dragon' has only lent credence to this theory, as the green color of jade can easily be connected to the symbolic portfolio of the Azure Dragon. Following this logic, fans speculate that future DLC Legendary Lords for Cathay will include an Azure Dragon of the East and a Red Dragon of the South (to match the Vermillion Bird). Her brother, the Iron Dragon Zhao Ming, rules the Western Provinces, has a white color scheme and is heavily associated with the element of metal, which reflects the purview of the White Tiger. For example, the Storm Dragon Miao Ying rules the Northern Provinces, has a black color scheme and possesses a cold demeanor, matching with the Black Tortoise and its corresponding season of winter. The two revealed so far seem to closely adhere to traditional Chinese symbolism about the four cardinal directions and five elements, including the idea of The Four Gods. The new lore revealed for Cathay states that its regions are ruled by several Dragon siblings.

The Hobgoblin Khanates are a common suggestion for pretty much the exact same reasons as the Chaos Dwarfs and Ogre Kingdoms, though sometimes as a lord choice for the Chaos Dwarfs rather than a full-on major faction (the hobgoblins have their own society, but their tabletop game presence has been through their mercenary/favoured slave/overseer status netting them entries on Chaos Dwarf army lists).

Total war warhammer faction map