Update and expand those emojis. The emojis currently listed in Teams are from Skype and limited at that. Way too old. Please update.
Rich Bernstein commented
It looks like Teams is still using EmojiOne version 3.0. It would be nice to see this updated.
Please include the red cross and green tick in the standard set.
Definitely need to expand and have consistent emojis like with other comms channels people use (whatsapp, facebook etc). I have gone to use the scream emoji a thousand times... but it's not there. Very disappointing!