Top 10 Naruto Characters Who Would Be Special Grade in Jujutsu Kaisen World
It is best known that the Naruto characters can fill into any anime world and have their way with it despite all the contradictory laws and differing power systems. With such versatility, they can make a living in the Hunter X Hunter, Solo Leveling, and Fullmetal Alchemist universes. But probably the most fitting universe for Naruto characters is Jujutsu Kaisen, where power levels and fighting styles are noteworthy in many ways.
Taking into account the grades given in Jujutsu Kaisen, quite a few Naruto characters would be placed into the Special Grade category. These are top ten Naruto characters who could definitely qualify as Special Grade sorcerers under the Jujutsu Kaisen setting.
Jiraiya

Jiraiya's vast battle experience and wide range of jutsu, especially when using Sage Mode, make him a Special Grade. His summons, like Gamabunta, give him an advantage in numbers during fights, making him a tough opponent.
Kakuzu

Kakuzu's near-immortality and ability to control multiple hearts in battle give him a special advantage. His large chakra reserves let him fight for a long time, making him a strong candidate for Special Grade status, even if he might not be able to beat the strongest Jujutsu Sorcerers.
Gaara

Gaara's control over sand and his strong defense make him a difficult opponent. His skill in using sand for both attack and defense gives him an advantage, but he might have a hard time against other Special Grade Sorcerers and powerful curses.
Obito Uchiha

Obito's Space-Time Ninjutsu and ability to become intangible make him a tough opponent. His use of Izanagi gives him a kind of immortality, letting him survive deadly attacks. In the Jujutsu Kaisen world, only Sukuna would probably be able to beat him at full power.
Minato Namikaze

Minato's incredible speed and his Flying Raijin Jutsu make him a tough opponent to catch. His teleportation skills help him avoid Domain Techniques, and his Rasengan can cause a lot of damage, putting him solidly in the Special Grade tier.
Uzumaki Naruto

Naruto, especially in his Baryon Mode, has amazing resilience and a lot of chakra. His ability to make many Shadow Clones can overwhelm his opponents, and his strong ninjutsu techniques make him a Special Grade character.
Sasuke Uchiha

Sasuke's mastery of Mangekyō Sharingan, especially around Amaterasu, would change the dynamics of any battle at any time. His combination of taijutsu and ninjutsu with speed combined would pose a threat to any Jujutsu Sorcerer below the Special Grade.
Itachi Uchiha

Itachi's Mangekyō Sharingan gives him access to strong techniques like Tsukuyomi and Susanoo. His Susanoo, which has the Sword of Totsuka and the Yata Mirror, would be very hard for Jujutsu Sorcerers to fight against, making him fit into the Special Grade category.
Pain

There are varying opinions about how well Pain would fare against sorcerers in the Jujutsu Kaisen universe. Given his mastery of the Rinnegan, he presents quite an interesting challenge. Pain controls six bodies at once, unleashing almighty techniques like Almighty Push and Planetary Devastation. These capabilities already put him up at the Special Grade level.
Madara Uchiha

Madara Uchiha would probably be ranked higher than Special Grade. His accomplishments in Naruto Shippuden, like defeating the Five Kage by himself and overpowering Naruto and Sasuke, show just how strong he is. In the Jujutsu Kaisen world, only a few characters, such as Sukuna and Gojo, would have a chance against him.
Final Thoughts
Other contenders for the title of Special Grade would be the many other characters from Naruto. Their base-forces may not measure up against the strength of Special Grade Sorcerers like Suguru Geto or Yuki Tsukumo, but that is where their real worth is shown in combat. Characters like Might Guy, with the Eight Gates, and Killer Bee in Eight-Tails form, would go past even Special Grade levels and provide a marvelous showcase of the immense strength of Naruto characters in the Jujutsu Kaisen world.