Right, so, after looking through the list of abilities and descriptions of each pokemon on our slate, here's a quick list of what I think would possible work/fit best for each one:
Tauros - Sheer Force, Reckless, Defiant, Mold Breaker, Moxie, Pressure, Rivalry, Vital Spirit
Ditto <- why
Vaporeon - Hydration, Water Absorb, Natural Cure, Serene Grace, Rain Dish, Regenerator
Jolteon - Quick Feet, Volt Absorb, Speed Boost, Competitive, Lightning Rod, Static
If anyone has any other suggestions, that'd be great