In terms of power naruto is high kage, however in terms of skill set he doesn't cut the jonin mark for me and sits at chunnin level.
True the requirements for jonin hasnt been explicitly been given in the manga therefore neither parties can make a claim for naruto being jonin or not. However the manga has given us hints of the skill set a jonin level ninja requires though ill admit some jonins do not meet these skill set.
The first is that those in the jonin category usually have 2 nature manipulation. Something that naruto lacks though quiet alot of jonins havent shown this therefore it isnt limited to naruto, though for example people like gai who uses taijutsu, this requirement would be evaded by him, however not by naruto who uses ninjutsu
Basic knowledge in the field of all 3 ninja arts and to an extent the ability to demonstrate all 3 forms. Though again majority of jonin's havent shown this. however the ability to disrupt your chakra, effectively breaking out of genjutsu is a skill that a jonin who isnt even a genjutsu user should know. Gai might not even know the basic genjutsu however he has shown the ability to know that he is a genjutsu and release himself from it.
Attention to detail and leadership. Naruto has shown some form of attention to detail, however usually its hinted to him. His intelligence feats is also very limited to battle situations and there is more to intelligence than just battle intelligence, but also his way of understanding things are quiet tricky to the extent that kakashi was surprised that jiraiya managed to teach him rasengan, but also kakashi decided not to go down the root of informing naruto about kg's, medic ninjutsu and genjutsu. As for leadership, he hasnt shown much of this unless you consider being the leader of konohamaru, udon and the other girl as leadership.
When judged on power alone then yes he is kage level, however he lacks the other ingredients imo which makes a jonin
Just to elaborate more on this. Base sasuke meets more requirements for jonin than base naruto, though i dont want to turn this into a sasuke vs naruto thread. Firstly he has 2 nature manipulation in raiton and katon. He demonstrated above average skill in ninjutsu, taijutsu and genjutsu, add to this kenjutsu and excels at weapon usage (shurinkenjutsu) in the form of Fuma Shuriken and Sofushasan no Tachi and Soshuriken no Jutsu. Did i forget to add that he can run his raiton through either his sword or shurikens. His base speed is also superior than base naruto's and commands a 4.5/5
His intelligence isnt limited to battle situations but also he has shown leadership skills when he recruited, karin, juugo and suigetsu and made it clear that he was the leader and at first suigetsu wasnt sure of him, however he came to acknowledge sasuke as his superior.
Base sasuke fits the bill for jonin more than base naruto and even then i wouldnt give base sasuke the title of kage
