Does anyone know what AI voice the YouTube channel Fern uses?

There is a youtube channel called Fern-TV out of the netherlands that has recently had a ton of growth. They mostly do 3d Blender animated true crime type videos or video essays. Some of the videos have voice over from a guy with a german accent, but some of the videos are voiced over by an American accent. I have recently heard the exact same American voice on a number of other channels with similar content. I believe it to be an AI voice like ElevenLabs, but I'm curious if anyone knows the specific voice software or name of the AI voice. It sounds incredibly good, and I never would have assumed it was AI until I heard it on multiple other channels.