Flames, Blushing, Fading and other markings.

[MisterKyte]

Okay, so highlighted in red is the sort of patterning I would consider a "Chain", just trying to make sure it's clear that we're on the same page here, and it's probably most common in Cinnamon/Black Pastel BPs but I see outside of the morph as well. Just with less frequency.

And I think a Rosette would just be a synonym for Alienhead, except for me personally an Alienhead is a specific type of pattern. Like, I'd call all that side patterning "Rosettes" and then the Rosette category can be broken up into thinks like "True Alienheads", Donuts/Cherrios, and Chains, etc.
Like here, I've highlighted like everything I'm referring in green to when I say "Rosette".


Also yeah, that Hook thing is interesting, I'll probably keep an eye open to it in the future when looking at YBs. I can't help but wonder if it's one of those things where once you know what you're looking for, you can see it or if it's a case of, you're subconsciously looking for the pattern when it's been put in your head with disregard to actually frequency that it appears. So far, definitely seems to be something that pretty apparent, to me at least, in most YB combos.
Also that Fire is wild! She'd probably produce the kind of Fireflies and Superflies that I like.