yes as I said :
Gnome3 uses mutter as Windowmanager, nautilus as filemanager, file-roller for archives etc .
KDE uses Kwin as windowmanager, dolphin as filemanager, ark as archive manager.
After the base installations you can always add e.g Dolphin to Gnome or Nautilus to KDE, if you like.
So you won't miss anything you want, but you may need to install it on top of your DE