Some of them also sound pointless, e.g the emoji keyboards. I know for a fact windows, macos and chromeos have inbuild emoji selectors. On linux KDE also has an selector, idk about gnome but even if it doesn’t have one there’s probably a shell exstention for that, there’s also an app called grin (or maybe smile? can’t be bothered to google rn). I literally can’t see a reason to use an web extension over those.