Potentially unpopular opinion: I don't like Apple's emoji designs. I prefer whatever I get on Ubuntu. Don't use Windows enough to know or care about those.

Reason: they're a little over-designed and shiny, and conflict with the current design trend of flat and more monochrome. They feel left over from Apple's skeuomorphic design days.

In general, I dislike the fact that any software maker can implement their own emoji designs. It's unwanted cognitive load. I dislike Discord's as well.