
Damn bruh, you've been reading way too many fanfic novels.
Base Naruto was going toe to toe with Momo and you want to say he's Iruka lvl. Rofl.
Now if you want to exclude "Nine tails enhancements even as a host or chakra enhancements from the 4th's seal and no handouts from Rikudo Senin" then here is your answer :
He'd still be top tier. He'd be a prodigy so to speak, at the top of his class.
During part 1, he was awful with chakra control, but that was due to Kurama. Kurama was more of a hinderance to Naruto back then. He literally had to make sure that he wouldn't take over his body. Sure he wouldn't have nearly as much chakra as today, but his skills would be much more refined and he'd learn more new OP jutsu's. Chances are, his dad would be alive and he'd learn FTG as well as SM at a younger age. Even learn more hax sealing techs.
Face it with or without those enhancements he'd still be OP.