darktable used xmp, and that looks like an alternate metadata format, it looks like exiftools might be able to work with the xmp standard, and it looks like there's some face tagging features in xmp.
https://photo.stackexchange.com/questions/106410/how-does-xmp-define-the-face-region
There's some weird links between american christianity and oil. At the very least a bunch of the people who got rich off of oil also tended to be devout christians, and used their money to support evangelizing christianity and oil dominance.
There's a number of different reviews for "Anointed With Oil: How Christianity and Crude Made Modern America"
This is an especially detailed one. https://www.bostonreview.net/articles/kim-phillips-fein-anointed-oil/
I found the book and it's reviews after noticing just how biased toward the republicans the owners of the oil companies tended to be. Other large businesses tend to play both sides in politics, but the owners of the oil companies really seem to be really into the traditional gender hierarchies.