I made a datapack yesterday with emojis named "", "thumbsup", and "confused". The mod mishandled the emojis differently:
For "" the mod just didn't register it in-game, it was in the datapack and it didn't show it in-game, and for "thumbsup" and "confused" it used the default image for both of these.
My idea is to let users rename the emojis when they're typing out the datapack command, with similar syntax to this :__:-"stare", then the bot will automatically rename the emoji while forming the list.
Relevant image: