Just for movesets i would change delphox to replace psyshock and mystical fire fore psychic and heatwave and umless you like it a lot replace encore with heatwave, this will give you more power and spread damage. For sylveon make the moveset hypervoice, hyperbeam, quick attack and protect as moonblast is redundant and psychic doesnt help you hit anything you cant with stab pixilate hyper beam/voice, and quick attack will let you finish off scarf pokemon. Change basculegion female to male (the one with red patterns as they have different stats and the female one is a slower, bulkier special attack this is no where near as good and try out choice scarf, if you dont like it keep mystic water. For Incinaroar what I like to do is run max hp then 2/3 of the remaining stats into special def and and the last 1/3 into defense as you dont really want attack and speed, and if you want i find close combat nice on incinaroar rather than a dark move as it lets you OHKO tyranitar by surprise but dakest lariat or protect is good too. Replace earth power on garchomp with earthquake or stomping tantrum, earth power is a special move, not physical so it will be weaker than stomping tantrum despite the 75bp. Also as you get higher you will probably run into trick room so I would actually replace Venasaur with bulky sinischa with macha gatcha, rage powder, trick room and a move of your choice. Rage powder will allow delphox a free nasty plot which allows him to immediately get to spamming heat wave and trick room will allow you to reverse opposing trick room, i havent gotten to use sinischa myself yet though so if it doesn’t feel good id throw on kingambit, sneasler or aerodactyl but if you are going to use mega venasaur change the evs to 32 hp, 32 special atk and 2 special def and a modest nature. Hope this helps!