probably 98% of them are expression edits (a lot of them are just minor smile edits) with the rest being pets with an emoticon design
The following tags are available for the search function on a computer [wink] for winking pets (one eye closed, one eye open) [closed] for pets with all visible eyes closed [emo] for pets designed based on an emoji/emoticon
Royalty (kings etc.) are tagged with [royalty] so you can use the search function on a computer
Clowns/jesters have their own post and aren't included here. Didn't include the large annual batch of Christmas reindeers, you can find their information here.
Doesn't include constellation signs - check out [Space: galaxy, planets, stars, constellations, etc] It's a bit subjective whether it's simply a star/moon/sun symbol or representing the actual thing, so I'd recommend also checking out the Space category.