Starting off we have the Clanging Dragon itself, Kommo-o. I've opted to build around the defensive set as I find it checks a lot of very troublesome and prominent Pokemon in the metagame such as Rotom-Heat, Volcarona, Heatran, Serperior, Ash-Greninja, NP Hydreigon (Can even scout Scarf), and Tyranitar thanks to a decent defensive typing and solid bulk. In regards to moves, they're pretty simple, with Drain Punch being the STAB of choice to maximize Kommo-o's longevity (since it lacks reliable recovery, though Body Press is also an option for raw power), Stealth Rock to get up hazards, Toxic to cripple switchins like Torn and Slowbro, and Protect to scout, get back additional HP, and stall with Toxic damage. You can also run options like Earthquake to catch Ghosts like Aegislash and Gengar if you wish. The EV spread is one given to me by
Chazm that gives Kommo-o enough speed to outspeed base 60s while maximizing its special bulk.
Next up we have Rotom-Heat, who is one of the best pivots in the tier and also a potent wincon in its own right with Nasty Plot. The moves are pretty standard, with Overheat being the Fire STAB of choice, Volt Switch giving momentum, Nasty Plot turning it into a wincon, and Pain Split so it can stick around a while. The spread is one that lets it outspeed Gyarados while maximizing its physical bulk, letting it take on dangerous threats like Galarian Darm that much better.
After that is Slowbro, another great pivot that serves as the bulky Water of my team and the final member of the defensive core made up of it, Kommo-o, and Slowbro. Slowbro is Slowbro, checking many dangerous metagame threats like Garchomp, Gliscor, Mega Metagross, and Galarian Darmanitan. The moves and spread are pretty standard, not much else to say
Following that is Tornadus-Therian, the single best pivot in the tier and defogger of choice. I've elected to give it a Z-move since offensive Torn is extremely potent in this meta and I couldn't fit it elsewhere. The moves and spread are pretty standard, letting it hit as hard as possible while abusing that amazing speed tier. I've opted to go Heat Wave> Knock to improve the Metagross and Aegislash matchups, though Knock can be slotted back on if you wish.
Next up is Kartana, who is the team's 2nd wincon and revenge killer of choice thanks to its ability to outspeed both Scarf Hydreigon and Scarf Darmanitan while also abusing the prominence of Tapu Fini in the metagame. It greatly appreciates Rotom and Torn's ability to remove its common checks and can easily steamroll teams after they are gone. It doesn't appreciate the confluence of other Torns but again, Rotom and Torn can deal with those. Set and spread are pretty standard
Last up is the undisputed best Pokemon in the metagame, Mega Metagross, the team's final wincon and piece of the offensive core. The set and spread are pretty standard, though I did labor over that final move for quite a bit, and ultimately I came to the conclusion that Earthquake is the best final move here, as it deals well with Heatran. Ferrothorn is covered by Rotom, Torn, and Kommo-o so no need for Hammer Arm, Slowbro is covered by Rotom and Torn, so no need for Toxic, and Darmanitan is covered by Rotom, Slowbro, and Kartana, so no need for Bullet Punch (though Bullet Punch is the 2nd best option here imo).