I feel "confused" by what all you want to happen, or not happen.

Do you want just the Usenet-->list to be moderated or all messages to the list?

Do you want the notification of moderation NOT to go to all Usenet
submittors or no submittor?

To turn OFF notification of moderation to ALL, you must create or update
your list's MAILTPL file thus:

 >>> POST_EDITOR
.qq