naruto is the strongest senju

[Hikari Uchiha Senju]

Minato is most likely a Senju related to Tobirama, probably Tobirama' Son, but we still need to find out!
If Minato is Senju then Naruto is a Senju!

He can't be Tobiramas son... Maybe a great-grandson? That would also explain why his last name's Namikaze, don't you think?

 

[Naruto D Luffy]

Naruto Uzumaki is from the Uzumaki Clan
not the Senju clan