We had 3 out of 12 examples (now 4 with the Elder). Which means there are possibly another 8 and given they were passed on throughout history, there were probably many more. You need to have top tier Haki, that might be true, but you don't need to be peak CoC.
And sure, you could argue that Fujitora's Haki > C3s due to him focusing on a sword and a paramecia, but the C3 have busted Logia fruits. I assume that the Gravity power also serves as a substitute for ACoC.