Funny you ask about the AI voice apps.
I have one which is the best available to the public, and in fact costs money to use. I've used it for radio a few times. I did some excellent versions of poker players Eric Persson, Robbi Jade Lew, and Doug Polk. I did pretty good impressions of celebrities like Ed Sheeran and Vin Scully. I did an okayish one of Donald Trump.
But you know who it just can't do well? Christopher Mitchell. Comes off sounding robotic and nothing like him. Not sure why.
They've updated it, so maybe I'll try again. Otherwise an AI Chrissy would have appeared at the beginning of radio months ago.