ok then since Hshirama's wood is ninjustu, does that mean Madara can absorb it??
stop stating ''fact'' if it's not proven for sure
Considering that Minato described the requirements for FTG as touching something with his body or chakra. He gave no other limitations, so there's not reason to believe that it's impossible to teleport water style. It has the user's chakra inside of the water to control it's shape. This means that Minato can connect his chakra to the water's and use that link to teleport it.
Also, Tobirama teleported Obito's orb. It was described by Hiruzen to be a liquid. Many make the argument that Tobirama teleported it when it was a solid state, but think about it. Whenever it's shown, it's almost always solid looking. Yet Hiruzen stated that it was a liquid.
Conclusion: Obito's orbs are liquids that form shapes like water style does.