I would like to auto-register users from domain_A (eg. company-A.net) in WikiJS group G1 and users from domain_B (eg. company-B.com) in WikiJS group G2 and domain_C (eg. company-C.fr) to ... (to allow FQDN to auto-register strategy)

In my case, it is local database Auth strategy, but it should be possible with any strategy.