The AP has ruled: the plural of Emoji is Emoji.
“Treat the visual material as context or gestures when important to include, describing by paraphrasing: Chavis sparked a flurry of responses against the airline after tweeting a GIF of large crowds at the gate, with the message “#missinghoneymoon” and an emoji string of a worried smiley, a ring, an hourglass and an umbrella propped on a beach.
Be aware that some GIFs, emoji or other images may contain hidden meanings and nuances requiring consideration and more than just a simple description of the image posted.
Do not use parentheses to describe an emoji within a direct quote, to avoid confusing readers by making it seem as if the person being quoted wrote out the description in text.”
So now you know: The AP are 🤡 who make me 🤢. 🖕-them.