In Azumarril I think the Choice Band should be better, or go with Belly Drum, and Double Edge<Superpower or Aqua Jet
Try Calm Mind Clefable with Softboiled over Wish
For Klefki, you can go with Dual Screen, or as a Spikes supporter, you can trick a flame orb instad of a choice band, or go with Magnet rise so Garchomp Can't touch you.
For your Gardevoir, try Focus Blast or HP Ground/Fire over energy ball, yep,And you can also change Psyshock for Psychic too.
I think your moveset for Togekiss is perfect, but if for some reason Toge Pass doesn't work as much as you'd like it to, then you can use Toge as a kind of Physicall wall, go with Roost, TWave, Air slash and Aura Sphere/Flamethro/Defog
And last, but not least, (this is just my opinion: Sylveon>Florges) you can go with the same moveset but Hyper Voice over Moonblast, and protect over Calm Mind, (if you're a wish passer).