I think Anwen would prefer chocolate for sure. She comes from a place where chocolate just doesn't exist. What I mean by that is -- yeah, maybe cocoa beans are a thing there, but no one has turned cocoa into candy by adding milk and sugar. And even if they had, there's no way for that candy to reach her.
So when she came to The Crossroads and the modern world, chocolate would probably knock her socks off!
For Keelyn, I think she'd prefer vanilla. For Raph -- he doesn't need to eat since he's already dead, but... hm. I don't think he'd have a preference. Donas, probably also chocolate for the same reasons Anwen likes it. And Zhirenne... not sure! She's a carnivore, so things like cake don't feature too heavily in her diet.
My question for the next person: What is your character's favorite genre of music?