Off the top of my head I can't think of a single example of any actors that come across as an "off-brand" version of someone else. What are some of the examples you have in mind?
I don't think this has anything to do with this case, but there certainly are some "types" in Hollywood with doppelganger actors.
Isla Fischer / Amy Adams
Margot Robbie / Samara Weaving / Jamie Pressley
Justin Long / Ezra Miller
Not to mention all of the token/stereotype characters where it hardly matters who the actor is at all. Need to fill the funny fat lady trope? If Rebel Wilson wasn't available, maybe they can get Melissa McCarthy.
The voice from Her isn't even the first voice I'd think of for a female computer voice. That trope has been around for decades. I'm sure OpenAI just wanted SJ specifically because she's currently one of the most popular celebrities in the world.
Another one you didn't mention: until relatively recently, I thought actors Elias Koteas (Exotica) and Christopher Meloni (CSI: Special Victims Unit) were the same person!
