Nats.
But you knew that. Nats are easily the top NL team, with some interest in the Rox.
The AL is more complicated. Really like the Rays, to the point where I find it hard to root against them even when it would advance the BoSox interest. I get around that by avoiding rooting negatively and just hoping the Sox take care of business for themselves.
I'd put the Twins and Os in the same bin as the Rox - follow, will root for, but clearly behind the Sox, Nats, and Rays.