What is the token to add Person Number to the Alerts Composer Task completed notification?

Summary:

As multiple people can have same anme, client wants to add Person Number to Task completed notification. What taoken can be used for that in journeys. Is there a delivered list of tokens supported by Journey notification like we have for Leraning Alerts from Alerts composer?

Content (required):

Adding person number to Task Completed Owner notification

Version (include the version you are using, if applicable):

23B

Code Snippet (add any code snippets that support your topic, if applicable):