This is a team I used at lv 91 (with minor moveset changes) but it should still work very well if the lowest lv of ur team is lv 80+ and max grit on all stats except for unused attack/special attack stats:
Luxray (hard counters Volo’s Togekiss and roserade and spiritomb and can hit all but Hisuian arcanine and lucario super effectively; can use t wave on Giratina to prevent the team from getting double turned) with ice fang, play rough, thunderbolt, thunder wave
Snorlax (hard counters roserade, (Volo’s) Togekiss, Hisuian arcanine, garchomp and hits all but spiritomb supereffectively) with high horsepower, bulldoze, ice punch, crunch
Gastrodon (hard counters all but roserade and spiritomb and hits all but spiritomb supereffectively) with bulldoze (or earth power), ice beam, recover, water pulse
Infernape (the fast one that hard counters Hisuian arcanine and lucario and hits all but garchomp and spiritomb (and Togekiss if you use bulk up or calm mind over thunder punch/poison jab) supereffectively) with shadow claw, fire punch/flamethrower, drain punch/mach punch, bulk up/calm mind/thunder punch/poison jab
Togekiss (hard counters spiritomb and both Giratina formes and hits all but (Volo’s) Togekiss super effectively) with water pulse, flamethrower/mystical fire, draining kiss, Moonblast
Cressilia (hard counters roserade, garchomp (and (Volo’s) Togekiss if using charge beam or icy wind) and hits all but lucario and Hisuian arcanine super effectively) with lunar blessing, psychic, moonblast, power shift/charge beam/icy wind/ice beam/calm mind.
⚠️ WARNINGS/SUGGESTIONS ⚠️
⚠️⚠️⚠️⚠️⚠️REMEMBER TO EXERCISE EXTREME CAUTION WHEN IT COMES TO THE TURN ORDER BAR WHEN USING STRONG STYLE BC ITS LIKE CLICKING A FREE ROBUX LINK; ITS VERY RISKY⚠️⚠️⚠️⚠️⚠️
⚠️⚠️⚠️⚠️⚠️ABSOLUTELY NO USING 5PP MOVES OR WILD CHARGE OR MOVES UNDER 90% ACCURACY OR MOVES WITH FIXATION BC ITS LIKE CLICKING A FREE ROBUX LINK; ITS VERY RISKY⚠️⚠️⚠️⚠️⚠️
⚠️⚠️⚠️⚠️⚠️CRESSILIA NOR THE "POKÉMON THATS JUST FOR REVIVE SPAMMING" OR ANY OTHER POKÉMON IS EXEMPT FROM THE LEVEL REQUIREMENT OF 80 (NOT 75, NOT 68, NOT 60, DEFINITELY NOT 40 ABSOLUTELY NOT 37) AND NO, HAVING A LV 100 POKÉMON DOESN'T MEAN THAT THE REST OF THE TEAM IS EXEMPT FROM BEING APPROPRIATELY LEVELED AND ALSO NO EXEMPTIONS ABT GRIT BC THATS LIKE PUSHING THE MESS IN YOUR ROOM UNDER YOUR BED; ITS NOT THE SAME THING AS DOING THE JOB RIGHT⚠️⚠️⚠️⚠️⚠️
⚠️⚠️⚠️⚠️⚠️REMEMBER TO BRING LOTS OF HEALS AND TO HEALSTALL RIGHT BEFORE U KO VOLO'S LAST POKÉMON BC ITS A 6V8 GANTLENT ⚠️⚠️⚠️⚠️⚠️
⚠️⚠️⚠️⚠️⚠️GOOD NEWS! VOLO'S TEAM COMP SUCKS DEFENSIVELY!!⚠️⚠️⚠️⚠️⚠️ hope this helps:) :) :) :) :) :) :) :) :)