Feature Requests New "Hidden" status between Private and Public

I'm really needing a "hidden" status for pages, for them to be shareable (to client ..).

Exactly on the same model that Gdrive/Gsuite :

Private > For your eyes Only

Public > Shareable to the world. Can be linked on a public website. Can be found and indexed by google (and you have a lot .. https://www.google.com/search?q=site%3Aupdown.io

Hidden > Only for people who know the URL, to be shared internally. With a long hash key in url that cannot be bruteforced, with meta no index , cannot be indexed by google.

(YES, one could find the url if they hack my mailbox,the same if I share a password by email , same for google drive "shared to anyone with the link", or a wetransfer private file, that's good a security enough for most usecases)

Right now, public pages are too easy to find and can be indexed, so nogo for this usecase.

thanks for the consideration !