Slowking-G is prob the best jolteon counter, with reliable recovery, regenerator, being neutral to anything jolteon wants to throw at it, and being bulky it can take it on. Jolteon only way of breaking it is by reading it with shadow ball on the switch and even then slowking-g isnt falling over that easily. It will take a lot of work for jolteon to muscle through slowking-g on the opposing team (although it can always bring in something that heavily likes slowking-galar in like weavile, iron jugulis, specs pult, etc)
