Since I'm not a MacBook Pro /w Touch Bar user, I occasionally use the macOS Emoji & Symbols viewer to double-click various emoji entries into the system. However, the Emoji & Symbols viewer is annoying because it's easily hidden by other application windows, and it seems to disappear once you click outside of the application window and select another app.
I can't find a way to make it "float" on the Desktop, or to prevent it from closing when switching to another app?