Calling all stompas! What are your favorite mono-green, gruul, or naya commanders?

I have come to the conclusion after 13 years of magic and 4 years of being a serial commander deck builder that I am a green enthusiast at heart. I am also interested in gruul and am open to naya. I haven't bothered to touch simic, although I know how absurdly powerful it can be (probably why I haven't touched it). I keep opening myself up to jund, but just can't click with it for some reason--probably for the same reason I can't click with gruul. With all that said, I am looking for a deck that is green to its core and relentless.