Mahomes and Lamar ran quite a bit their first few years. I'd love to have a discussion with anyone now if that's what they are.
Mahomes had his career high in rushing attempts this past season. His 2 lowest rushing attempts was his first 2 seasons.
Aaron Rodgers ran a lot when he first started, so did Steve Young.. Nothing to do with color.
Lamar is still more of a threat with his legs than his arm.
Fields isnt a good passer. Sure he has a cannon when he lets it rip, but I dont know if he cant read defenses or is just too slow to process. Wont be the last guy with all the talent in the world but doesnt have what's between the ears to make it big.
Mariota, Z Wilson, Wentz etc and personally, I'm thinking Trevor Lawrence doest have it either