Shinobi that have good amount of experience, are highly skilled, and can atleast use two nature type chakras are fit to become Jōnin. If a shinobi desires to be a Jōnin they can do so by appearing in Jōnin exams. Also, if villagers and respective Kage find a shinobi to be given the rank of a Jōnin, they can do so. A Jōnin usually goes on A and S rank missions. Now lets take a look at some ninjas who may become Jōnin in future.
8. Boruto Uzumaki
Boruto is the son of Seventh Hokage Naruto Uzumaki, and Hinata Hyuga, and the Grandson of Fourth Hokage Minato Namikaze. He is able to learn techniques in very short period of time, and believes he can learn any technique no matter how hard. Despite being a Genin, he has learned some Jōnin level techniques at this young age. His Rasengan proved very effective against Momoshiki Ōtsutsuki. He can use use multi shadow clone jutsu and with the help of his Sensei, Sasuke Uchiha he has learned Shurikenjutsu as well.
He could even wield half of Hiramekarei, which shows he can use a bit of Kenjutsu as well. Boruto has a kekkei genkai Dōjutsu, which is said to be a unique Kekkei Genkai. Boruto will eventually become a Jōnin in future.