Hide users from People Picker

Hi all,

I have SharePoint online and some domains configured. I would like when I share a folder/document from a SharePoint Site in people picker to see only the users form specific domain or not to see at all.

EX:

If I create a new SharePoint site to be visible only for domain contoso.com I want to show me in PeoplePicker only users with name@contoso.com

Or you have another solution in order not to see users from different domain ? Or not to be seen at all.

Thank you,