Just a nitpick, really, but I would replace Emolga with Raikou.
While there's a good reason Emolga isn't in Standard often if at all, Raikou doesn't get enough love, either; it's got access to all the same offensive tools Jolteon has, but arguably does it better; furthermore, it counters all formes of Thundurus and Tornadus with impunity thanks to special bulk, Calm Mind and Volt Absorb (although the occasional HP Ground from Tornadus may give it some trouble). Xiph can tell you how easily it rips rain teams in two. In my opinion, CatDog needs to go in here if you're gonna list alternatives for Jolteon.