Does XFCE edition
include Openbox WM with same configuration files of Openbox edition?
Or does XFCE edition require new Openbox installation and configuration?
You can use sparky-desktop to install openbox with sparky's configuration:
sudo sparky-desktop openbox
or via APTus -> Desktop -> Openbox
The sparky's config files will be copy to your home dir.
See more:
https://wiki.sparkylinux.org/doku.php/sparky_desktop