If you look at the emojis in discord it says the text for them. :skull: would be the skull emoji and :rolling_on_the_floor_laughing: is the rolling on the floor laughing emoji. So yeah, very simple and makes it easy to type emojis on servers.
I was going to not upgrade this to 1.21.11 but when I was upgrading, I noticed that there is literally no other emoji mod that works for 1.21.11 (apart from 1 but it doesnt have :sob: and they used the wrong :skull:).
Here is a list of all of the emojis that work (some of these will not work in older versions of the mod):
:skull:
:sob:
:wilted_rose:
:100:
:thumbs_up:
:thumbs_down:
:smile:
:frown:
:heart:
:broken_heart:
:nerd:
:fire:
:cool_guy:
:joy:
:smiling_face_with_tear:
:blush:
:upside_down_face:
:wink:
:heart_eyes:
:smiling_face_with_3_hearts:
:yum:
:stuck_out_tongue_closed_eyes:
:zany_face:
:face_with_raised_eyebrow:
:sunglasses:
:star_struck:
:smirk:
:pleading_face:
:cry:
:weary:
this was a :triumph:, I'm making a note here: "HUGE SUCCESS"
:exploding_head:
:flushed:
:scream:
:fearful:
:thinking:
:shushing_face:
:melting_face:
:no_mouth:
:grimacing:
:hushed:
:open_mouth:
:zipper_mouth:
:money_mouth:
:star:
:fire_engine:
:crab:

A simple way of typing emojis in Minecraft using the Discord codes! E.g. :skull: or :sob: or :wilted_rose: