Your point about Yamato having Conqueror's Flow for years is pure speculation (just look at Ace who also used Conqueror's as a child), and your point about Yamato having an hybrid form is dumb because King also has one.
That's why I didn't address those.
The point about Zoro's haki was much more logical which is why it would have made sense if it were the main point.
If you said she had awakening (which she may have, I don't know), it would have been a really great point. But talking about her hybrid form as if it were a form or an asset of hers that we still had yet to see, or as if it was special, is not a good point at all.
Chopper has an hybrid form as well.