The revision history is not supported in Airtable API. Due to this limitation, it's not possible for third-party developers to access that data. It's exclusive to the Airtable official app. Edits made by external users are always showing from one user, regardless of who makes them.
Can I track who made the edits in the record's history?
Edits made through miniExtensions show up as "You edited via API." Can I get a more accurate history in the record "activity"?