The Github provider makes it possible to authorize users based on their group membership through the teamWhitelist, in addition to explicit whitelisting or allowAllUsers. As an organization that uses GitLab, we are looking for the same feature for GitLab, currently only supported as a general OIDC provider.
As far as I can see, that is not possible at this point? Is that correct? If not, we would be interested in providing a GitLab provider which also makes it possible to use the teamWhitelist, as long as that contribution would be welcomed.