The broadest category of powers in the world of Naruto is ninjutsu. Ninjutsu isn't the most clearly defined technique - broadly speaking, it includes all abilities outside of genjutsu (illusionary techniques) and taijutsu (body and hand-to-hand techniques). It can include the ability to summon any animal from dogs to slugs, as well as conjure powerful defensive techniques like Sasuke's Susanoo, elemental attacks like Kakashi's Chidori, and existentially terrifying powers like Orochimaru's Living Corpse Reincarnation.
The best ninjutsu users in Naruto boast not only one formidable technique, but can often use five, nine, or even hundreds of different jutsu. You don't want to be on the wrong side of any of these powerful ninjas.
Be sure to check out the best Lady Tsunade quotes if you like the females that use ninjutsu.
Minato Namikaze wasn't the Hokage for nothing - he's a wildly talented ninjutsu user who can use a wide range of techniques. He invented the Rasengan, a giant ball of energy that can be hurled at enemies.
He also uses the Flying Thunder God Technique, which allows him to instantly teleport to any location he's previously left his seal on, including moving targets like an enemy ninja he might be tracking.
One of Konoha's founding members, Tobirama Senju is also one of the most powerful combatants the ninja world has ever seen. He is the inventor of many of the techniques that made later ninjas famous. These include the Impure World Reincarnation, which revives the dead, and the Flying Thunder God Technique, which allows him to teleport to previously tagged locations.
He also possesses incredible sensory abilities, allowing him to determine nearly everything about a person just by reading their chakra.
Known as The Professor, Hiruzen Sarutobi's ninjutsu specialty lies in his ability to determine the nature and function of any technique he comes across simply by watching it happen. Not only can he understand any ninjutsu he witnesses, but he can also replicate most of them.
He can also combine different kinds of ninjutsu - for example, he can use both fire and earth release to create flaming balls of mud, which he can hurl at opponents.
One of Konoha's founding members, Hashirama Senju, boasts formidable ninjutsu prowess. Though skilled in a variety of techniques, he's best known for his powerful chakra reserves and a unique ability, Wood Release, which allows him to manipulate the area around him, altering everything from vegetation to the ground itself. He could also create structures strong enough to capture and suppress tailed beasts.
This ability can be used for all sorts of incredible or devastating purposes, which is why Orochimaru went on to kill numerous children who were in pursuit of replicating it.