also the way everything was stated in the manga the sage would have to be from the uzumaki clan since the way the techniques got passed down support that as well as kushina is not a liar.
Origionally i had though that it was the other way around but i was wrong,this would also mean the first s06p had red hair and in his old age exausted it making the 9 tailed beasts on his death bead making it turn white like nageto.If it follows this order where the uzumakis were the start of it all then naruto technically would become even stronger than the first hokage since he is a direct blood reletive of that clan.The other thing that bothers me is that the uzumaki's have the senju as a spin off clan but the uchiha never were officially stated to even though it technically would be the huygga clan that some how broke away from the feelings of revenge or predated the uchihas entirely as being the clan that was an ally with the uzumaki's int he first place