A "great narrator" refers to someone who has exceptional storytelling abilities. They can captivate and engage their audience by telling a story in a compelling and interesting way. Full definition
Simon Whistler is a great great great narrator as well. (audible.com)
We have just gotten through the Audiobook version of Keto Clarity which is a brilliant way for those who are short on time or just don't like reading, Jimmy makes a great narrator. (myketokitchen.com)
When he finally musters a word, Malick dubs him over with still more untethered thoughts from the great narrator in the sky, rendering him the quintessential «Peanuts» adult — an inarticulate alien in his wife's ritualized world of promises and apologies. (filmfreakcentral.net)