Osara

It's tiring to keep hearing Naruto is the strongest, if you follow up the manga currently, Boruto is the apex ninja now, in terms of abilities Naruto was given Kurama... That's a cheat code for almost unlimited chakra, his son has karma which barely relies on, instead he works on his skillset... Imagine Naruto without Kurama then you might see Boruto, even in battle experience if Boruto taps in karma which essentially all the momoshiki battle experience, then he outgrows any human experience, the kid at base level is as strong as his father if not stronger than him, then imagine if he grasps the totality of his powers, Naruto with Kurama, Sasuke would be eating dust...just accept reality and let the OG Naruto rest, it's not even his story that ongoing.

Shadow is also very strong and versatile not using just his speed alone, if you have play his solo game you would know, also he has equally fought big sized enemies and still wears inhibitor rings... He's called the ultimate life form for a reason no shades to sonic he's cool too