@jjohn545
Clay: Lao-Shan Lung. They're big. That's it. That's all I could figure out to go with Clay that wasn't out right evil or wants to devour anything.
Tsunami: Valstrax or Namielle. Namielle because W A T E R. or Valstrax because I imagine the literal rocket dragon either being an adrenaline junkie and speed freak or being pretty calm most of the time, but when it gets mad, it gets like Tsunami. Valstrax doesn't seek out fights and it stays away from hunters, but it will ruthlessly fight back when needed.
Glory: Namielle or Chameleos. Chameleos because they can both camouflage and they're both rainforest dragon. Namielle because the Abyssal dragon is one of if not the calmest of the elder dragons. it's the only one that isn't throwing hands on sight when it sees the hunter. (Fun fact: just found out that Namielle and Chameleos are related to one another.)
Starflight: Maaaybe Kushala. I can't really think of anything else for him. It's the only one of the elders I could picture picking up a scroll.
Sunny: Chameleos or Gore Magala. Chameleos because it's like the hyper-active trickster of the elder dragons. And Gore because blind baby and he would get a nice mom, but the baby will turn into a literal demon when it gets a little too grumpy. Also, Shagaru resembles a star and the sun is technically a star
These are just ideas I came up with on the fly. Do what you wish with them