Google My Business updated the Insights report for photo views so you can filter the images based on whether the owner uploaded the photo or a customer uploaded the photo. There's a new drop-down list to filter by (a) all photos, (b) owner photos, and (c) customer photos.
Here is a screenshot with this new filter:
I think Andy Simpson was one of the first to spot this, and he posted about it on Twitter. He said, "Now you can see who in the photo is getting the most views on the GMB dashboard." I already noticed this filter in September 2020, but I don't think a lot of people know about this filter option.
Forum discussion on Twitter.