Now for some Hidden Power alternatives and a few corrections:
Chandelure's Scarf set. Psychic is pretty much the only other usable move, unless you want to run Flamethrower and Overheat.
Charizard's 3 attacks+recover set. No change here, but Hidden Power Grass doesn't have any brackets. Consistency, y'know. It's also listed as 'HP' rather than 'Hidden Power'. Same thing with Exeggutor.
Cofagrigus. Energy Ball is it's only other usable attacking move. There's also Iron Defence. After a few CM/Iron Defence boost he'll be pretty much invincible.
Ditto. It's Imposter, not Impostor.
Eelektross. Firstly, Drain Punch > Brick Break for obvious reasons, and maybe put Ice Punch alongside Crunch. For the Charge Beam set, I'd put Thunderbolt over Grass knot, and Grass Knot next to HP [Ice].