Thanks to Addis and KarateChopMonkey, a Google Sheets was created of all ExR novels and the relevant data taken from Novel Updates. We added the average rating and the all time rank on NU's website to get the Ranking of ExR novels.
I (or KCM) will try to update it after every new novel is finished, or three month mark, whichever comes first.
I hope these rankings make everyone sign up for a Novel Updates account so you can rate our novels and get some of them more recognized by other readers!