No one (besides Lemmiwink's previous post) has brought up the facts that all these Normal-types can run Pursuit, besides Kangaskhan. Even without a Close Combat defense drop, Ambipom's Pursuit does 55-65% to a fleeing Gallade, which is enough to keep it from doing real damage later. "Oh but what if he stays in" yeah fucking right that would be bullshit. If you have a healthy Gallade facing an Ambipom, you are going to switch out unless you don't have any more Normal resists, in which case feel free to spam Return.
From Swellow and Tauros it is a little less powerful due to a lack of Technician, but still enough to take a nice chunk of Gallade's health. From Swellow (assuming Guts, which may or may not be unreasonable), it does 50-59%, 33-39% without. From Tauros, it does 37-44%. Not as impressive, but enough to make Gallade more managable later.
Also, Ambipom can be a pretty threatening force. With Low Kick, it deals a ton of damage to its usual stops, like Regirock, Registeel, Steelix, and offensive Rhyperior. It also can go with a gimmicky Grass Knot and fuck over Rhyperior if it wants.
But I still think it's pretty baffling that people think that only Normal types can take an unSTAB Shadow Sneak. As mentioned earlier, Leafeon takes it for a ~14HKO with its 130 Base Defense, and its Life Orb Leaf Blade (from Jolly Leafeon, though Adamant Leafeon will still outspeed Jolly Gallade so you could even run that if you want) does 87-102%.
Even Sceptile, who is not physically bulky by the most liberal definition of the term (70/65 defenses), takes only 60-70% from +2 Adamant Shadow Sneak, and then OHKOs with Leaf Storm. Obviously not a real check that anyone is advocating, but I'm just showing that Shadow Sneak lacks any real OHKOing power on non-Ghosts and non-Dugtrios. Anything faster than Gallade that can kill it is an offensive check. And if Gallade has used Close Combat, that is a really high list.
Does anyone else find it horribly ironic that heysup is saying "checking Gallade isn't good enough" when for months he was saying "Crobat checks the whole metagame!". Just saying.