I think the biggest takeaway from this are my beliefs that Jolt is not an OU caliber Pokemon. Definitely a couple other things people may take notice of, but Jolt is easily the most important thing. With Rhydon on the rise (despite my putting it a spot lower than most), the Electrics are under more scrutiny than ever to prove their OU worthiness, and like Rhydon and Golem before them, Jolteon is largely a lesser Zapdos whose biggest edge is winning the 1v1 against it's competition (Golem's biggest edge was probably boom, really. But you get the point).
Jolteon is faster, but both of its attacking stats are weaker, it is frailer, and it has to spread its coverage for Chansey and Exeggutor over two moveslots while Zapdos can just use Drill Peck for both. This means Jolteon has to chose between Rest or Thunder Wave for its utility move, while Zapdos is free to fit two of Thunder Wave, Agility, and Hyper Beam onto its set, widening the gap even further between the two since Zapdos has better utility options because it has room for more.
Imo, Jolteon's best roles in OU is alongside Zapdos on teams that hard fish for no Rhydon, and on teams that need a Zapdos and a Slowbro answer compressed into one slot, which I do not see as OU caliber niches. Otherwise, just run Zapdos, or even coverage Thunderbolt on a better Pokemon.