A Dracayean's form is tied to their personality, right? If the mortal ros (plus Alister and Daealla if that's not too many characters) were Dracaryean what color and build would they be?
You are correct. A Dracaryean's form is tied to their personality, and the colors of the scales reflect it.
Loreena: She would be a red dragon because those are the first ones on the battle field. Just like Loreena always is. She's just as fierce as any Dracaryean warrior. Never leaving a man behind if she could help it. She would be the warrior class.
Robin/Robyn: R would be a green dragon because those are usually the partners of the red. While not weak they are like the archers to a knight. Or a rogue to a warrior... if that makes sense. Their agility and speed can deal a lot of damage but they can take serious damage if they're not careful.
Edmund: I could see Edmund as a red dragon too, and while he a warrior I'm not picking red because of that. I'm picking it because Edmund is a very passionate person. And the red dragons embody that. When they feel they feel with a burning hot fire. (He would also be a warrior class.)
Esmé: Esmé would be a platinum dragon. For those were the one's that were filled to the brim with elegance and class. Their scales sparkling like millions of diamonds in the sun. Esmé embodies what a platinum Dracaryean is. She would be a diplomatic Dracaryean.
Ayleth: Ayleth would be a gold dragon, because those were the ones that were most adept at magic. Being able to wield their Dracaryean powers proficiently within and outside of their draconian form. Ayleth would be a warrior Dracaryean but the mage portion.
Cedric: Cedric would be a blue dragon. While he is a warrior through and through, something much greater shines within him. His loyalty. Blue dragons were the most loyal of all the Dracaryean. Never one to tell someone else's secret, and making sure that the ones they loved were safe. (Cedric would be a warrior class too.)
Caspian: Caspian would be a black dragon. Black dragons were the scouts/spies for the Dracaryean. Being able to fly through the night and never be seen. The shadows seemingly attaching and reattaching to their forms.
Aghadi: Aghadi would be a red dragon too. But again not because he's a warrior, although that plays a part. It's because of his strength and perseverance to keep going. Despite all the odds pulling him down, he will always get back up to fight again. Especially if it meant keeping the ones he loved safe.
Alister: Alister would be a white dragon. White dragons were the purest of all Dracaryean. For they never wanted to harm a thing, unless there was just cause. They protect with their entire being and do everything within their power to solve something without bloodshed. Because they believe that there was enough unhappiness in the world, and that the good should finally shine through.
Daealla: Daealla would be an iridescent dragon. Iridescent dragons were the most mysterious of all the Dracaryean. For they never truly cemented themselves into one group. Though the main color of theirs scales usually gave them away. They were always shifting and changing, just like their scales.