I think it's only the "hype train" going on here, people are overeating and I can't see any of them being really tournament-worthy except maybe Umbreon as a support. Even Vaporeon as an attacker isn't really better than Urshifu and dealing 200 isn't gonna one shot anything + it can't hit cheryl + if you miss the goon ping you can't even 2HKO Vmaxes as 100 + 200 isn't a good math to have.
On the other end Espeon will be good against both Urshifus and Shadow Calyrex, so a good point for it.
Most of the others can at least stand as their own tier 2 or 3 decks, and Umbreon is gonna be tier 1 support in 2023. I'll be surprised if someone doesn't find some kind of use for Vaporeon at some point too. Espeon VMAX needs to be paired with Shadow Rider to be good. It is a really good paring though, easily winning against other Shadow Rider decks, any acceleration-heavy deck, and being a serious problem for Dragapult VMAX.