Layout/Language Switcher
The globe button should open a popover which allows switching between different keyboard layouts/languages. At a minimum there would alwasy be the current language and the emoji layout, but if other languages are set up in Settings, those should also appear here.
The "Keyboard Settings" item would open the "Region and Language" panel in Settings, where you can add/remove system languages.
Edited by Dorota Czaplejewicz