Responses not recorded for unmodified ranking questions
When a Forms question is set up as a 'Rating' type, and if a responder leaves the ratings as is and doesn't upvote or downvote any items on the list (i.e. keeps the default ratings) then submits the Form, the default ranking is not exported to Excel for that responder.
It looks like Forms is treating this question as a blank response, but it is a valid use case for a responder to just accept the default ranking and submit the Form. Forms should still record this as a valid response and allow this to be exported to Excel