Digital, because when you look at some of the incredibly detailed scenes in the emote gallery, it seems so much more than merely a way of showing your emotions on the internet.
It's definitely digital art. But how'd we categorize after that is iffy. Cause we could go pixel art, but some emotes aren't pixel art. It's complicated.
Devious Comments
After that i'm really not sure.. Unless it goes straight to "emoticons".
Digital Art > Emoticons > All the Emoticon categories.
Done.