Board Thread:Naruto Discussions/@comment-33156423-20170923231447/@comment-1512913-20170925091519

The databook says they were descendants of Kaguya, which automatically made them descended from either Hagoromo or Hamura, or even both. My personal belief is that they came from Hamura, because while the Senju/Uzumaki represent Hagoromo's body and the Uchiha his eyes, the Hyuga/Moon Otsutsuki represent Hamura's eyes, so to match the theme, it would make sense for Kaguya Clan to have been Hamura's body.