Below is an example of the view amounts when window-selecting the callout, detail section, and building section:
This is where things get interesting: When selecting all callouts, detail sections and building sections in the view, we now have twice as many views
A view list schedule confirms that we only have one of each type
After a bit of investigation, we saw that the Crop Boundary for each view is also seen by Revit as a View, which kind of makes sense. So there you have it: A section, for example, is actually two views - the section itself, as well as the crop region.