Samurott, Emboar, Carracosta, Elektross, Floatzel, Sawsbuck. Just the physical STABers that come to mind easily, that Dragonair resists. I probably could think of less special attackers.
Ignoring physical bulk means you have to dispose all physical threats before you can shuffle.
I am still not sure a calculated spread is the best option in a rather streamlined Meta.