Kakashi is also often written as a teacher in Naruto academy teacher fanfiction. His laid - back yet highly skilled nature makes for interesting classroom dynamics. He could teach the students some of his signature moves, like the Chidori in a modified, beginner - friendly way. Plus, his experiences in the ninja world can provide great real - life (well, ninja - life) examples for the students.
Iruka is a really popular character to be written as a teacher in this kind of fanfiction. Since he already has a strong connection to Naruto and the other students in the original series, it's easy to expand on his role as a teacher. He can be shown teaching advanced lessons or dealing with new challenges in the academy.