It could be the Sage of Six Paths. Since he is a very powerful and almost god - like figure in the Naruto universe. He might have decided to take Naruto under his wing to further his growth.
In this 'naruto adopted by gods fanfiction', perhaps Naruto is taken in by the gods because they see his potential. The gods could give him a new mission, not just to protect the Hidden Leaf, but to safeguard the entire ninja world and the balance between the mortal and divine. He could then start training in a whole new way, with the gods' guidance, and form alliances with other god - related beings.
Zeus could be one. He is a powerful god in Greek mythology and might be interested in Harry's story. Another could be Odin from Norse mythology, known for his wisdom. And perhaps Isis from Egyptian mythology, as she has powers related to magic and protection.
Zeus is a possibility. As the king of the gods, he might see Percy's potential and adopt him to have an ally among the demigods. Another could be Poseidon, since Percy is already his son in the original story. It would be an interesting twist to have Poseidon formally adopt Percy in a more divine way.
Well, it could be about Percy having a new life in the realm of the gods. Maybe he gets special powers and training from them. He might also face new enemies that are threats to the gods, and he has to use his newfound abilities to protect the divine world.
If Kakashi adopted Naruto, it might change Naruto's path of development. He could receive earlier and more specialized training, and also have a stronger sense of family. This could have a significant impact on his personality and goals.
Well, it could be that the gods see Harry's plight at the Dursleys and decide to take him in. Maybe they give him new powers, train him in godly magic that's different from what he learns at Hogwarts. He could also be sent on quests related to both the wizarding world and the realm of the gods.
It depends on the specific fanfiction, but it could be gods like Amaterasu, a major god in Japanese mythology. Maybe also Susanoo, known for his power and might. Another could be Tsukuyomi, with his control over illusions. These are just some of the possible gods based on the existing mythology that could be incorporated into the fanfiction for Naruto to challenge.
Maybe the gods are some of the tailed beasts in a more divine form. Since they are powerful entities, they could raise Naruto, teaching him how to better control the power of the Nine - Tails within him and also how to communicate with other tailed beasts on a more spiritual level.