All denominations, most denominations, a few denominations, no denominations, or ONE denomination.. and if one which one?..
Denominations are not churches. They are communities of faith, but they are not churches in the scriptural sense.
Again — didn’t I already post this? — the perimeter of the One Holy Catholic and Apostolic Church is her sacraments. The particular churches that are together One Holy Catholic and Apostolic are those where valid sacraments are offered. They are several churches in communion with Rome, several Orthodox churches, and perhaps, a few pre-Chalcedon churches such as Ethiopian Armenian and Coptic.