ta.wikipedia has a strange group called nocreate which just removes its holders the createpage user right (to prevent them to create any pages). It is defined at https://github.com/wikimedia/operations-mediawiki-config/blob/8e39cbebd59276cc385e7b5a57a19715f5475ec1/wmf-config/InitialiseSettings.php#L14642
'wgRevokePermissions' => [ 'tawiki' => [ 'nocreate' => [ 'createpage' => true ], ], ],
With the deployment of Partial Blocks this doesn't seem to be needed anymore. Thoughts?