How to Restrict Self Sign Ups from Unauthorised Users to Metabase via Google SSO

We have implemented Google SSO on self-hosted Metabase and also added domain restriction so that only users who have a company email are authorised to access it.

However, we don't want to allow anyone in our company with a company email to self-register themselves as a user on Metabase via Google SSO Button on the login page.

Is there a way to restrict self-signups, and only allow pre-authorised/registered users to login only via SSO?

Metabase Pro/Enterprise allows this, you can restrict the domains

Hi Luiggi,
We have already restricted the domain. But within the set of all domain restricted users, we only want a subset of users to be able to register & login.

Is there any way?