Soothing voices for audiobook listening.
When I'm doing stuff with numbers, I don't wanna listen to music, because I'll be distracted, and I don't wanna listen to an audiobook that needs mental attention either.
But there's people with podcasts that have voices that are valuable even if I were to ignore the intellectual content they provide. Nate DiMeo ('the memory palace'... his voice is soothing), Paul McGann (he voices a lot but I'm partial to 'real dictators'... his voice is crisp and rough in a good way), and Kennedy (the MTV/Fox News one, for if you need a little pep in your step from someone who sounds like they need less coffee and more ritalin).
If I'm having an AI voice a book from text for me, I'm training it on one of them depending on the author's tone.