It should be possible to find a voice artist for hire that sounds like Scarlett Johansson in "Her" when you can fingerprint voices, model them, and quantify the differences.
Hiring a lookalike or soundalike is already settled case law.
OpenAI made it easy for Scarlet Johansson’s lawyers. They referenced the movie Her multiple times.
It’s a slam dunk if one of open aisle employees mentioned sky sounding like scarlet Johansson as a plus.