Category:Stained-glass windows (photo series by Nheyob)

This category is an image set. It is named after the author of the images, but is not a user category. Anyone can extend this set with images in the same style.
Category:Image sets named after users

This category does not contain all stained-glass photos by Nheyob (and there is no need to change that). Many are directly in subcategories of Stained-glass windows in Ohio etc.
Many of them do not clearly form sets anyway. This category serves as a root category for those that do. These are some examples:

By contrast, Saint James (Concord, NC) could just as well not be a set, because the images do not clearly have more in common than the motive.
But the square subset shows an effort to connect these images, and that made the difference.

Most subcategories are for particular churches. The exception is Stained-glass windows (square photo series by Nheyob).

Category:Stained-glass windows by image set

Pages in category "Category:Stained-glass windows (photo series by Nheyob)"

Category:Image sets named after users Category:Stained-glass windows by image set