I suspect that there is no way to tell which program has added tracked changes in a Word document (if that is what you are asking).
What happens if you download the document from Google Drive, saving it in *.docx format, and then opening the document in Word?
In Word, it is possible to always use the "local" user name (specified in File > Options > General) or to make use of the user name in OneDrive. This is controlled by the "Always use these values regardless of sign in to Office" at File > Options > General.
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Stefan Blom
Microsoft Word MVP
Microsoft 365 apps for business
Windows 11 Professional
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