Then you might have a good chance of doing this here too.
There are no separate Qubes-Whonix CLI / GUI packages or minimal / full.
For example for the workstation, it’s probably required to understand the following and emulate.
Some packages under
Depends: are optional. Others might result in a template with broken functionality.
whonix_meta_package_to_install currently doesn’t support multiple space separated packages.
But that would be quite easy to support by removing the quotes here in the yellow marked line: