Jiraiya could also be involved. Picture him writing his 'Make - Out - Paradise' books while stuck in a time loop. He might keep getting interrupted by Naruto or other characters in different and humorous ways each time the loop resets, like having his ink spilled or his notes stolen by a curious Naruto.
Sakura could be in some comical situations too. Maybe in the time loop, she keeps accidentally punching Naruto instead of the enemy due to some time - distortion related confusion. And then she has to figure out how to make it up to him while also trying to break the time loop.
Jon Snow would be a likely candidate. Given his complex story arc and his role in the fight against the White Walkers, a time loop could give him the chance to make different decisions and potentially save more lives. He could also use the loop to better understand his true identity and his place in the world.
Sasuke could also be a character who breaks the time loop. He is highly intelligent and has a thirst for power and knowledge. If he realizes that he is in a time loop, he would likely be very intrigued and start investigating. His Sharingan might give him some insights into the nature of the loop and help him find a way to break it.
Definitely Hinata. Her gentle yet strong - willed nature could be an interesting contrast when dealing with the often - mischievous yokai from Nurarihyon. Gaara too, as his own experiences with being an outcast and having a powerful force within him could have parallels in the Nurarihyon world where some yokai are feared or misunderstood. And Rock Lee, his determination and unique fighting style could bring a new dynamic to the interactions in the fanfic.
Naruto himself is the most obvious one. Since it's a Naruto - related fanfic, he would likely be at the center of any crossovers with god - like entities. His strong will and desire to protect his village make him a prime candidate for interacting with powerful gods.
Kakashi could also be involved. Maybe he's put in a difficult position where he can't save Naruto for some reason, like being under a powerful genjutsu or being blackmailed. This would create an interesting conflict as he's Naruto's teacher and mentor.
Well, characters like Jiraiya could be really interesting in a 'naruto crossover godlike fanfic'. He has a lot of knowledge about the ninja world and different powers, so his encounter with god - like beings would be full of potential for interesting stories. Tsunade too, as a powerful Hokage, could be involved. She could represent the Naruto world's power structure when dealing with these otherworldly god - like entities. And then there's Orochimaru, who is always seeking more power, so he would be very likely to get involved in any situation where there are god - like powers to be had.
Naruto and Sasuke are very likely. Their contrasting personalities and styles make a clothes swap between them full of potential. It would be a great way to show their differences and similarities in a new light.
Gaara could also be part of the fanfic. Since he has his own unique abilities related to sand, there could be an interesting interaction between his powers and Naruto's summoned creatures. For example, Naruto could summon a water - based creature and they could team up with Gaara to fight an enemy that is strong against both sand and water.
Well, Arya Stark has a good chance. She's highly adaptable and has been through so much. Her skills as a Faceless Man could potentially be used to discover the secrets of the time loop and break it. Also, Jon Snow. He has a special connection to the North and has faced death and come back. His unique position and the respect he commands could help him find a way to end the time loop. And then there's Tyrion Lannister. His intelligence and ability to think outside the box might lead him to the solution to break the loop.
Katsuki Bakugo, with his powerful quirk and complex personality, could be a character in time travel fanfics. He might go back in time to prove himself even more or to change certain interactions he had with other characters in the past.