Not sure if /s, but I recently read about emoji history. It apparently originated from pagers and then "graduated" to phones.

https://one-from-nippon.ghost.io/story-of-the-emoji/

Doesn't talk about kaomoji though which I think are supercool. Like this table flip: ( ╯ ° □ ° ） ╯ ︵ ┻ ━ ┻