Shouldn't this be Kings Sutton?Kings Norton is the next station from Banbury for London bound trains but as few trains stop there it can be better for London bound Kings Norton passengers to first travel away from London to catch one of the more frequent trains from Banbury.
Shipley is another triangular junction with platforms on all three sides.
I note that you have used Shipley as a response to Newton-le-Willows which is not a triangular station...but the next station of Earlestown meets that criteria.
Newton-le-Willows another station served by Northern's 319s