Who reads the additional comments a reviewer can add during the review process?
As the title suggests really.
In many of my reviews, whether I approve or reject (probably more for ones that I reject) I usually add in some additional comments in the free text boxes. The text could be simple suggestions around typos or more in depth, adding extra context around a reason for rejection and so on.
However, I can't think who would actually see this content, and when.
Is it the nominator, other reviewers, Niantic, or a combination. Furthermore, when would they see it? I don't think I have seen any additions made by other reviewers so I feel that perhaps it is seen only on appeal.