I am an oversight at wiki.pt and a member of the "Oversight-wp-pt" list, but I have concerns about who the members of this list are. I've already tried to contact the owner's email, without success. Hence, I have two questions:
The owner doesn't seem to be an oversight anymore https://pt.wikipedia.org/wiki/Especial:Lista_de_utilizadores/oversight
I can't disclose its members or the owner. Some look correct, some does not. I add you as an owner, you handle the rest.
I made the email address attached to your wiki account as an owner of that mailing list. You can make an account in lists.wikimedia.org (if you haven't) and then go to https://lists.wikimedia.org/postorius/lists/oversight-wp-pt.lists.wikimedia.org and clean up as necessary