Oregon has a slightly different approach: the photograph has to show the driver. They then mail a notice to the registered owner. The last I knew, it was possible to say "no, that's not me" without being required to say who it was. You do have to send in a copy of your driver's license so they can (presumably) compare the two photos.
https://www.portland.gov/police/divisions/photo-enforcement makes it sound like a business can pay the fine on behalf of the driver without having to reveal who the driver was.
The Arizona laws seem similar. There was a man who got 37 tickets, all while wearing a gorilla mask: https://www.azcentral.com/story/news/local/phoenix-traffic/2...
In Oregon, all photos had to be reviewed by law enforcement until less than a year ago. https://www.wweek.com/news/city/2022/03/10/legislators-scrap...
Mobile speed cameras still have to be manned by a uniformed police officer. https://www.portland.gov/transportation/vision-zero/speed-ca... I have a bit of sympathy for that since I can imagine a person being threatened to remove the evidence.