Natural UK & US Voice Talent for Conversational AI Project

I am looking to cast a roster of natural-sounding UK and US voice talent for an conversational AI project. I need a diverse range of authentic, believable voices across various age groups and styles — ranging from deep and authoritative to warm, polished, or reassuringly calm. What matters most is that your delivery sounds like a genuine human in a natural, unscripted conversation, so an acting or improv background is a big plus, while theatrical, over-the-top, or cartoonish performances should…