OpenStack Python CLI - Clouds Config Not Recognized By "nova"

I have my clouds config clearly defined in ~/.config/openstack/clouds.yaml

Running the CLI openstack command works fine (eg: openstack domains list, etc.)

Trying to run the CLI nova command (eg: nova service-list) returns ERROR (CommandError): You must provide a user name/id (via --os-username, --os-user-id, env[OS_USERNAME] or env[OS_USER_ID]) or an auth token (via --os-token).

Shouldn't nova use the same clouds.yaml config?

Note: This happens on all clouds (switching them with export OS_CLOUD=<name>) and only fails for nova..

EDIT: This is not a devstack deployment I can control. I only have the config information for each cloud and admin credentials for making changes as needed.