Tornadus-T for S-Tier? Agree
He has almost everything an offensive Pokemon could ask for. A godly Speed stat with above average Attacking power, a solid STAB move that has good coverage, has a good movepool, and an amazing ability. Tornadus-T can play offensive pivot with U-Turn, Hurricane, Focus Blast/Superpower, and a move of your choice. Thanks to Regen, Torn-T is one of the few Pokemon that can abuse Life Orb to the fullest. Tornadus-T, just like Terrakion (although IMO, Torn-T does it better), is gifted with the ability to place offensive pressure, momentum, and support for a team. Tornadus-T can switch in and scare out a handful of the metagame. Tornadus-T can also keep offensive momentum with U-Turn. Tornadus-T can also support by using Rain Dance, Taunt, or Tailwind. On the flip side, Torn-T requires little support. Tornadus obviously thrives in rain and loves it when SR are off the field. However, even without rain, Hurricane is a move with manageable accuracy. Even if Rocks are out on the field, thanks to Regenerator, the SR Damage will essentially neutralize the damage.
With the ability to create "free turns", support the team, sweep, and require little support, Tornadus-Therian should take his rightful spot in S-Tier.
Landorus-I for S-Tier? Agree
I already argued his case previously and aladron has extensively proven why. Overall Landorus is a monster requiring little support and lending any team massive assitance in offensive pressure. Landorus is a Pokemon that can create free turns, thanks to his menancing Physical+Special sets. Landorus is slightly hindered by a "low" (101 is fast, but this metagame is just so fast, 101 sometimes seems underwhelming), speed stat and a 4x Ice Shard weakness. However that shoudn't hold Landorus-I back as Terrakion has 3 priority weaknesses anyway. IMO, at this point anyone who thinks Landorus-I should stay in A-Tier, obviously needs to feel a +2 LO Sand-Force Earthquake or a +1 LO Sheer Force Earthpower ;)
Ninetales for S-Tier? Agree
I mean if the little amphibian we call Politoed got to S-Tier so can our Kyubbi (naruto joke :3). People argue that Politoed's ability in Drizzle is just legendary because it is just so damn useful to Pokemon in the OU Metagame (Torn, Thund, Keldeo, Toxicroak, etc). Well Ninetales Drought is the same story. With Drought, Chlorophyll abusers can shine and sweep in the sunlight of glory. In fact, I'd argue that Ninetales+Chlorophyll abusers are better, in a way, as they don't compound weaknesses like Politoed+Tornadus for example. Anyhow, while Ninetales itself is not S-Tier by any means, it ability is what makes it deserving of S-Tier.