Since there isn't a lot we can do about it, I do wonder what is the point of this, unless you are considering a career as a professional fighter, in which case, we aren't really talking just about Martial Arts anymore.
There is something to be said for both types. Other things being equal, the small, lean person might have an advantage in endurance. On the other hand, the bigger, stronger fighter can hit harder. There is another obvious thing in MA , which is flexibility. Some people are more naturally flexible than others.
All that said, from what I remember from my previous training, lean, tall fast guys were absolute beasts in the ring. A small, fast guy with good technique could usually take a bigger guy who was slower or whose technique wasn't as good, but that person would still lose to a person who was equally as fast and good, but who is 8 inches taller, with longer reach for punching and kicking. Maybe in the grappling arts it would be different, IDK..