How to identify Contacts added by WhatsApp in Contacts.app?

[miles8888]

Title says it all.
I'd like to be able to identify the contacts that are added by WhatsApp in my macOS Contacts.app
I've looked at all the available fields in Contacts app, and also looked in BusyContacts, but cannot find any field/tag/indication that the Contact was added by WhatsApp.
Grateful for any suggestions.

 

[galad]

No, if WhatsApp didn't add any additional info, there is no way.