-Coric is a suffix used to create new terms for genders centered around "core" aesthetics. For example, a gender centered around cottagecore would be cottagecoric. These genders are inherently aesthetigenders and many are xenine in nature. A list of -coric genders can be found in its respective category: Coric.
Coric genders can only be created if a "core" for that concept exists.
Core aesthetics are a concept created on Tumblr. A word is put in front of the word to encapsulate a range of emotions and images that word can evoke. For example, cottagecore is based around comfortable images of simple living and coziness. Arcadecore would be based on images or feelings associated with modern and retro arcades.
The alternate flag was designed by The Anomaly. The heart in the flag comes from how "core" comes from heart. It was designed to not use many colors to look aesthetically pleasing and this is because most coric aesthetics don't use many colors and because the preexisting flag can contribute to sensory overload. The blue, pink, and white are in reference to the transgender flag.