I gave it a try and now created two 2 organization within the global account. We now have Dutch and German organizations that can have several guides.
You will only see this when you login with the credentials in bitwarden. Otherwise, you only have access to the guide you are contributing on. For example Theo has access to the Dutch and German one, but not the English one.
I’ve emailed Gitbook to understand if this was the right way to go or if at some point we will be limited by the number of organizations and would need to have all the languages under the original organization.
I will wait for their answer to migrate the french one.