P: Faces data to IPTC Metadata Persons Shown

When I enable Faces and name people found in photographs Lightroom Classic adds that name to the Keywords tab. I would like an option to change that and have the name written into the Persons Shown IPTC Metadata field.

A further use would be to have it also written into the Description field, with an option for it to either append or prefix whatever is currently in the IPTC Description field.

This is partially implemented. Face names don't appear in the Person Shown field of the Metadata panel. But when you export a photo, face names will appear in the IPTC-standard XMP field Iptc4xmpExt:PersonInImage.