the most elite ninja have some level of chakra nature manipulation that can be used in a powerful technique. Now I know this is obvious, but what i was thinking is that some natures seem to be more powerful, useful, or compatible than others. In my opinion, Lightning is the most powerful of the Chakra Natures. Used in the Chidori, it has been known to pierce the strongest defenses, also disrupting chakra flow in the body. Gaara and Naruto are jinchuriki so they are acceptions. Also as seen in the 3rd Raikage it can be a powerful defense, strong enough to defend against Narutos Rasenshuriken. He was known to have the strongest weapon and sheild in his Lightning style. As seen in Sasukes "kirin" a lightning style tech. can move at the speed of a lightning bolt if he is amidst a thunderstorm. All that being said its not very practical because... he has to wait for a fuckin storm. Other natures can be more useful if the terrain suits it, such as earth and water, that being said i think that water nature manipulation is the most useful, simply because 90% of the earth is water. The 2nd hokage could pull water from thin air. And it can appear in different forms, steam, ice, obviously... Lastly i believe that the most compatible nature is Wind. It can amplify fire tech. to their maximum. As seen with Yamato it can make for powerful Typhoon type jutsus that can cancel out severel fire type techniques, IDK if it would be effective against Tsuchikages Lava style but im rambling. It can be used to make any projectile a piercing one so used with earth style and maybe even gaaras sand may be extremely effective. As far as with lightning goes, all i know is that wind trumps it so i dont know how they can be used in a Cooperative Ninjutsu.
If you think another nature is better or more usefull feel free too disagree and explain. I may have overlooked some stuff. sorry for the shitty spelling and grammar.
In any case, there has yet to be an elemental
jutsu shown stronger than the rasen-shuriken..the
raikage could only hurt himself because he's
a conradiction which makes sense...it's like
Garra being able to pierce himself while taking
guard from someone else or nobody can get through
Susanoo but I'm sure Sasuke is able to stab
himself...just because it didn't work
doesn't mean it wasn't the strongest,
because it's the only one that is seen as
having a chance...
work, but raikages attack did, even if it was his
own attack that defeated him his attack was still
stronger than narutos. Aleast it was more
effective against that type of defense.