I was wondering this (about the most played fixture thing) and knew we could be away for a couple of seasons before it was affected.
Anyway: 41,522
Still just ahead, the Merseyside Derby would have drawn level if we had stayed down for another year.
Villa v Everton 202
Everton v Liverpool 200
Confirmation near the bottom of the link below...
https://www.skysports.com/football/everton-vs-liverpool/preview/391040