I'll provide some work for the Wings Of Fire dragons one:
Scout: Skywing (Fastest dragon tribe. Also, wouldn't be surprised if he was a Dragonet born with no flames, causing him to be weaker than his other Skywing sibs)
Soldier: Leafwing (Some leafwings, particularly the Poisonwings, are very militaristic)
Pyro: Silkwing (Pretty, colorful, known for being crafty and creative!)
Demoman: Mudwing (Mudwings are very big on family, and Demoman seems to care for his mom a LOT. Mudwings are also very bulky and strong, like Demoman!)
Heavy: Icewing (Both come from cold areas. Just... cold.)
Engineer: Sandwing (Both come from very hot areas, and both can be very prickly and defensive when need be. They're also a lot more important to the plot than expected!)
Medic: Nightwing (Horrifyingly willing to disregard being ethical, at least before Queen Glory came to rule over the nightwings. Some nightwings even experimented on Rainwings too.)
Sniper: Seawing (Seawings live underwater. Sniper came from an underwater New Zealand.)
Spy: Rainwing (Rainwings can change color, sometimes to mimic other tribes of dragons. There was one instance where a Rainwing managed to grab ahold of a magical artifact to change his tribe completely into a different tribe.)