When creating a new team, you can copy existing productivity labels from an existing team. Meaning, all already reviewed apps and websites of one team can be copied and applied to a new team upon it's creation.
To do this, on create new team window , below team name box, there is a list of all existing teams. Simply select the source team you wish to copy productivity labels from and click save button.
Note: This action is irreversible, once done you cannot undo it
To learn how to copy productivity labels between existing teams click here