Jiraiya could be another one. Since he was Naruto's mentor, he might go after Naruto when he's kicked out and continue to train him in secret.
Sasuke is often a common character. He might have a different reaction to Naruto's banishment compared to the original story. Maybe he decides to join Naruto outside of Konoha or tries to find a way to get him back. Kakashi could also be there. He might be conflicted about Naruto's banishment and could play a role in either helping Naruto secretly or trying to uphold Konoha's decision.
Gaara could be one of the characters. He has a bond with Naruto and if Naruto is against Konoha, Gaara might get involved to help Naruto or at least try to mediate. Shikamaru is another likely character. His intelligence would make him a key figure in trying to understand Naruto's motives and also in devising strategies for Konoha. Hinata might be involved as well, because of her feelings for Naruto. She might try to protect Naruto from Konoha's attacks.
Jiraiya often appears. Since he was Naruto's mentor, when Naruto travels back in time, Jiraiya can play an important role. He could be the one to initially believe Naruto's story about coming from the future. Another common character is Kakashi. Kakashi was Naruto's teacher and his presence in the time - travel story can add a lot of interesting interactions, like Naruto showing Kakashi things he wouldn't know yet in that timeline.
Well, one possible plot could be Naruto leaving Konoha and finding a new group of allies who are also outcasts. They then form a powerful team to prove themselves to Konoha.
Iruka sensei is almost certain to be in it. He has always been important in Naruto's life. Also, Sakura might be there. She could be one of the first to welcome Naruto or perhaps she might initially be a bit cold because of her past feelings for Sasuke. Other characters like Kakashi sensei could also make an appearance, guiding Naruto in his new life in Konoha.
Sasuke would likely be involved. He has his own issues with Konoha and might side with Naruto, either out of friendship or his own vendetta against the village. Also, the elders of Konoha like Danzo could be important characters as they might be the ones behind Naruto's banishment.
Iruka Sensei is often one of the characters. He has always been like a father figure to Naruto to some extent. In these fanfictions, he may offer Naruto a place to stay and continue to train him. Another one could be Jiraiya. He might take Naruto under his wing more so than in the original story, seeing Naruto's potential and his difficult situation.
In many 'Naruto Exiled from Konoha' fanfictions, the Akatsuki members could be involved. They might view Naruto as a valuable asset now that he's an outcast from Konoha. Naruto could either befriend some of them, like Pain, who sees Naruto's potential and decides to help him in his exile, or he could be constantly on the run from them as they try to capture him for their own purposes.
Sasuke could be involved. He might either try to stop Naruto from leaving, believing that they should face whatever comes together in Konoha, or he could decide to join Naruto on his journey, as they have a deep bond.
Sasuke is very likely to appear. Since he and Naruto have a deep bond, he would surely come to Naruto's aid when it comes to saving his family. Also, Sakura, as Naruto's teammate and a powerful ninja in her own right, would be there. Kakashi could also make an appearance, providing guidance and wisdom to Naruto, just like he did when Naruto was younger.