All of Norton Campbell (Prospector's) emote sounds. These sounds were added on August 17th, 2023 and removed on August 24th, 2023. (Sounds for D-Tier emotes were added with Norton's release in 2019 and were not removed.)
Idk but I hope they bring it back 😭 most characters are getting voices for their emotes (except for the newer and some old ones), so I think they might give everyone voice lines at some point.