it would be a bit surprising in the flashback with Hyoguro we see that even though Luffy mastered the Ryo, something was missing was combining the Haki of Kings with the haki of advanced weaponry.
And when Kaido attacked him, Luffy realized that he was using the Haki of the Conquerors in addition to the Haki.
Luffy took it to the next level by combining ryo + haki from Conquerors.
So that comes back to my question how can Kid do what Luffy did if he doesn't master basic Ryo?
Since to do what Luffy, Roger, Whitebeard, and Kaido did it seems the Ryo is needed at first. Kid did not have Hyogoro as his master how is it possible that he succeeds?
And when Kaido attacked him, Luffy realized that he was using the Haki of the Conquerors in addition to the Haki.
Luffy took it to the next level by combining ryo + haki from Conquerors.
So that comes back to my question how can Kid do what Luffy did if he doesn't master basic Ryo?
Since to do what Luffy, Roger, Whitebeard, and Kaido did it seems the Ryo is needed at first. Kid did not have Hyogoro as his master how is it possible that he succeeds?
Kaidos Ragnarok hit Luffy dead on, there wasn't any space between so it could be Kaido only know hardening + CoC while Luffy, Roger and WB know Barrier CoA + CoC. I'd guess Kidd falls with Kaido group and maybe BM since we haven't seen her use Barrier CoA.