FWIW in High Sierra (MacOS 10.13.3 build (17D25b)) clicking on the Go menu and pressing…
  • Option (⌥) adds Library to the list of menu options
  • Shift (⇧) presents a wider menu display and adds the option to Select startup disk on Desktop
  • Control ( ) presents a wider menu display offers the option "Enclosing folder in nw window"
  • Command (⌘ ) has no effect
It sounds as if Apple's technical writers are having trouble keeping up with the change rate. 𝌡

If we knew what it was we were doing, it wouldn't be called research, would it?

— Albert Einstein