The group id you are looking for is called
spo-grid-all-users. The full claim that is resolved is
In the claim above the sequence
11111111-A111-1A11-A111-1AAA1A111111 represents a User GUID specific to that user and your tenant.
To obtain your tenant specific GUID for this user / claim navigate to:
Be sure to replace the YourTenantPrefix portion of the URL above with Your Tenant Prefix.
The query string ?MembershipGroupId=0 will display all users in your tenant including the tenant specific, system created ones including: Everyone, Everyone Except External Users, and the Search Crawler