Here's the list of notable moves each eeveelution gains over Eevee (who provides mostly Wish and Shadow Ball):
>Vaporeon: Scald/Surf/Hydro Pump, Ice Beam/Blizzard, Signal Beam, Haze, Roar
>Jolteon: Thunderbolt/Volt Switch/Thunder/Discharge, Signal Beam, Light Screen
>Flareon: Flare Blitz/Flame Charge/Flamethrower/Fire Blast/Heat Wave/Overheat, Superpower, Will-O-Wisp
>Espeon: Psychic/Psyshock, Dazzling Gleam, Signal Beam, Grass Knot, Calm Mind, Morning Sun, Light Screen, Trick, Trick Room
>Umbreon: Foul Play, Taunt
>Leafeon: Leaf Blade, Knock Off, X-Scissor, Aerial Ace, Swords Dance, Synthesis
>Glaceon: Ice Beam/Blizzard/Icy Wind, Signal Beam, Water Pulse
>Sylveon: Psychic/Psyshock, Calm Mind, Light Screen
Vaporeon's and Espeon's movepools are already nowhere near shallow. Sylveon is worse off than them, but makes up for it by lolFairy and Pixillate. Umbreon got almost nothing, but it's literally all it needs to function, except for maybe 1turn recovery and extra status.
On the other hand Jolteon got practically fucking nothing and would improve immensely from better coverage (>implying GF will ever give electrics coverage). Same with Leafeon. Flareon and Glaceon are murdered by their stat spreads first and foremost and that's never getting fixed, they'd need very good setup moves like Shift Gear or Quiver Dance to make up for it.
