document set – People column not showing up in Word quick parts

I have a People column in my document library, and I have added it to my Document Set. I have also checked the People column to be a shared column in the Document Set Settings. I have other columns set up this way (e.g. managed metadata search tags).

I have a Word document set as Default Content for the document set. I want to include the People in the document using Quick Parts, but I don’t see it under Document Property. I would think I didn’t set up my Document Set columns properly, except my other column (Search Tags) is visible. How can I get People to show up in my Word document?

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My Sharepoint site is part of an Office 365 Group. Thanks!