Well, I can show you a lot of clips that proofs it comparing Sky's voice with a lot of voices Carla Castañeda did over the years and the fact that Irwin Daayan, voice of Moctezuma, lives in the same state and works in the same dubbing studio but you have deleted my edit so, what's the point of explaining it?
It can be restored if proof is available, though I'd prefer to see either correspondence with the voice actor or someone from Firaxis that confirms she voiced the character. (Unfortunately, her name isn't listed in the credits as the voice actors from vanilla Civ6, Rise and Fall, and Gathering Storm are.)
Thanks, ZeroOne! I found Ed Beach on Facebook and sent him a message asking him about the voice actors' names a few weeks ago, but I haven't gotten a reply. Twitter's probably the better medium to use.
And yes, EcoEcho, I'll apologize for the hasty reversion once I hear from the horse's mouth that you were right. I'm not too proud to admit my mistakes, rare though they may be. ;)