/usr/share/desktop-directories/ is in libgarcon-common 0.4.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/desktop-directories/xfce-accessories.directory
/usr/share/desktop-directories/xfce-development.directory
/usr/share/desktop-directories/xfce-education.directory
/usr/share/desktop-directories/xfce-games.directory
/usr/share/desktop-directories/xfce-graphics.directory
/usr/share/desktop-directories/xfce-hardware.directory
/usr/share/desktop-directories/xfce-multimedia.directory
/usr/share/desktop-directories/xfce-network.directory
/usr/share/desktop-directories/xfce-office.directory
/usr/share/desktop-directories/xfce-other.directory
/usr/share/desktop-directories/xfce-personal.directory
/usr/share/desktop-directories/xfce-screensavers.directory
/usr/share/desktop-directories/xfce-settings.directory
/usr/share/desktop-directories/xfce-system.directory