Board Thread:Boruto Discussions/@comment-34938099-20180619182027/@comment-30323490-20180620163138

As far as we know, Momoshiki is the oldest being who posses the rinnegan.Hagormo would be the next one in line.The interesting thing is that Kinshiki stated that much like Momoshiki, he also absorbed and consumed him guardian. Momoshiki seemed to absorb Kinshiki through his palm rinnegan (i could be wrong tho). I wonder if Kinshiki also had rinnegan at one point (which would probably make him an older rinnegan user than Momoshiki) but it`s unlikely.