Maybe some of the children of the Suna elders. These students would be under a lot of pressure to perform well. Naruto, with his own experience of being an underdog, would be able to connect with them. Also, there could be students who were previously part of Suna's rogue groups but are now trying to reform. Naruto would be a great influence on them, teaching them the right path and how to use their skills for good.
One of his students could be Gaara's younger siblings. They would be eager to learn from Naruto, especially since he was the one who changed Gaara's life. Another could be some of the regular Suna academy students who are looking to become stronger shinobi. They would see Naruto as a great opportunity to learn from someone with his level of skill and experience.
It could be that his students include some of the more talented but undisciplined shinobi in Suna. Naruto, with his own unorthodox training methods and his ability to understand and motivate people, would be able to bring out the best in them. He might also have students who are orphans, just like he was, and he could be a role model for them, teaching them not only ninja skills but also how to build a family out of friends.
One possible plot could be that Naruto is sent to Suna as a part of a diplomatic exchange of skills. He starts teaching the young shinobi in Suna his unique jutsu like the Rasengan. He also shares his experiences of perseverance and friendship, which helps in changing the mindset of some of the more cynical Suna students.
Gaara would be an obvious choice. Since Gaara is from Suna, he could be Naruto's close friend. They could train together and share their experiences of being jinchuriki. Kankuro and Temari might also become his friends. Kankuro could teach Naruto some of his puppet techniques, and Temari could help Naruto with wind - style jutsu training.
If Naruto becomes a Suna Nin in fanfiction, the plot would change drastically. For one, his relationships with characters in Konoha would be strained. His bond with Sasuke might take a different turn as they would be on opposing sides. Also, Naruto would have to adapt to Suna's culture and ninja techniques. He might learn new jutsus specific to the Sand Village, which could make him an even more formidable ninja in a different way than he was in Konoha.
There could be a group of orphaned ninja - in - training that Naruto takes under his wing. These students would look up to him not only as a teacher but also as a symbol of hope, much like how Naruto once looked up to Iruka - sensei. They could come from various backgrounds and clans, and Naruto would have to find ways to bring out the best in each of them.
He would surely meet Gaara. Gaara has had his own struggles and he might be able to understand Naruto on a deeper level. They could form an even stronger bond than before, with Gaara helping Naruto hide from those who might be looking for him in Suna.
Gaara could be a main character. Since Naruto has a connection with him already, Gaara could play a big role in helping Naruto adjust to life in Suna. Maybe he becomes like a brother to Naruto in this new setting.
He would surely meet Gaara. Gaara, having had his own experiences of being an outcast, would likely be one of the first to interact with Naruto. They could share their stories and become good friends.
One possibility could be the children of his friends. For example, Boruto could be one of his students. Since Naruto is now a jounin sensei, he could pass on his skills and values to the next generation, especially to Boruto who has his own set of challenges and potential as a ninja.
There could be some old and wise shinobi in Suna that Naruto encounters. These shinobi could have stories about the history of Suna and its relations with other villages. Meeting them would give Naruto a broader perspective on the ninja world. Also, he might meet some civilians in Suna who are affected by the village's politics and shinobi activities. Interacting with them would make Naruto more aware of the real - life impact of being a shinobi in Suna.
Another possibility is a long - forgotten or hidden member of the Suna clan. They could have been shunned for their necromancer powers in the past but now, due to some events in the fanfiction, their powers are needed. This character could have a vendetta against Suna for being ostracized, or they could be a hero in disguise, ready to use their powers to save Suna from a great threat.