Board Thread:Naruto 7: Discussion/@comment-945885-20141029223524/@comment-5936871-20141031023518

Technically Kaguya isn't a member of any of those clans since they weren't established at that point. But the Senju, Uzumaki, Uchiha, Hyuga, and Kaguya clans all come from her. She is the ancestor of all them, so she has strong blood ties to them, they're all her children basically.