You could try out a Scarfed (or simply boosting if you don't need it to revenge) Terrakion. Has insanely powerful Fighting hits (for TTar and Abomasnow) as well as strong Rock for Tales (though tbh you can just spam CC at all of them). Problem is that you don't really counter the weather leads since they do their job just by setting up weather - so you may as well just run something to wall each and use that to force a switch and set something up as they do. Wobbuffett is the most solid counter to them if you really want it, and I suppose he can revenge stuff to an extent.What is a good anti-lead against all weather starters and baton passers? If no such lead exists, what is a good anti-lead against weather starters and can revenge later in the game? The answer is not genesect.
Also, to the guy above, Sun teams are now quite common and they are by no means worse than any other weather - the ability Drought has been nominated for a ban for instance.