Rails is probably a notch below that because his success has been, at least from what I've seen, everywhere but the top tier of DI (he did win one championship in DI, that I saw -- and was the runner-up to, but it was with Loyola of Maryland).
Gillispie is very impressive, too, and could be considered in the top tier.
We could certainly bicker over who is second, third, fourth tier, but the top is pretty clear.