Universal Containers has Contact and Account objects set to Public Read Only for internal users,...

The external sharing model should be updated so that the Account object is private but the Contact object remains public only

Sharing rules should be configured open each object to give Read Only access to experience Cloud users.

The existing sharing model should be updated to so that the Contact and Account Objects are private, and sharing rules should be configured on each individualobject to give Public Read Only access to Experience Cloud users.

The internal sharing model should be updated so that the Contact and Account objects are Public read Only.