How would you describe each host's "style"?

Much hay is, was, and will always be made about which host people prefer out of Joel, Mike, Jonah and Emily. These discussions could go on for years and never go anywhere cause ultimately it's just personal taste, innit? That being said the four hosts each do have their own way of riffing, and their own relationship with the bots - just not one that I'm able to put into words.