Mother of god; either you are the summit of the metholodical skepticism, you are a troll, or you have a really low attention span _@: (no offense, bro ).
Indeed, Kaguya has the Byakugan. If it looks like a Byakugan, works like a Byakugan and people call it Byakugan, it must be a Byakugan.
Well in reply to almost all of the above, it doesn't actually say she has it does she? And I'm just confused as to why she has them rather than the rinnegan...