I think Lucci>King/Kata on the basis of their top-tier encounters is fine. I don't agree but that initial G5 clash was impressive and his resilience is crazy but Kaku hasn't really done much aside from awaken so why would he be above Marco or King?
I don't place Kata there, because Kata is awakened, has CoC, has FS, etc...
The issue with guys like King/Marco is they literally have 0 hype except what they're given (DFs, race). No earned shit. At least Lucci/Kaku unlocked awakening.
Only way I'd put King > Lucci, is if Lucci/Kaku cheated to get awakening, by using some science WG method.