I run a special tank Swampert
Swampert / Careful / 252 Hp / 6 Atk / 252 Special Defense
Stealth Rock
Ice Punch
Earthquake
Toxic/Yawn
I don't personally use a Dragonite, but that build is a pretty standard moveset. You can go waterfall for the 100% acc and flinch chance or any thunder/fire/ice punch for coverage.
As for your Skarmory, I'd change drill peck to either stealth rock, if you need one, spikes or whirlwind/roar
As much as focus blast sucks to use sometimes, that Gengar moveset will get killed by any form of Tyranitar basically. Can run substitute for safer swap outs vs pursuit or just run focus blast.
Salamence I'd run as naive mixed with a life orb since you're wanting to use dragon dance on the dragonite.
Jolteon you can run choice specs with volt switch/thunderbolt/signal beam and then HP ice or grass. Ice is good vs gliscor and the dragons mostly and grass vs swamperts, rotoms.
Arcanine I do not know much about. Have not seen him used a lot for a few years now and he was used as a tank mostly.
