Board Thread:Theories and Speculation/@comment-27924662-20171103131612/@comment-734582-20171103220826

Elveonora wrote: Hamura. I think while Hagoromo mostly represented Kaguya's powers post-chakra fruit consumption and god tree merger, Hamura's mostly represented Kaguya's vanilla powers. You could also argue that Hagoromo represented the more "magical" power Kaguya possessed whereas Hamura possessed her advanced physique.

Essentially, Kaguya had powers that fall either under advanced body or mystical power. All-killing Ash bones are just advanced bones, her rabbit hair needle is advanced hair, her byakugan is advanced vision. On the other hand, unnatural powers like her portals, genjutsu etc can be considered more "magical".

You could even argue that this split happened again with Ashura and Indra, since one got the strong body necessary to house his power while the other got the raw abilities themselves.

But yea, my money's on either Hamura, or a merger of Hamura and Hagoromo descendants.