The group includes executives from Apple, Google, Facebook and other technology giants. Mr. Davis is chief internationalization architect at Google. The group meets quarterly; at a meeting in May, they will vote on whether to formally induct the 67 new emojis.
I did not know that there is actually an organisation behind emojis till I read this article also tech companies get to vote if the design or characters get pass through. If you are using emojis, you should read this. It is quite a long read thou.