Hope you had a Merry Christmas,
Internauta and wishing you a happy new year! Apologies for the late post.
You asked me to build around Zapdos-Galar, I actually found this quite hard before finding a version I was happy enough with and I ended up landing on this:
GAPDOS BALANCE
Team Breakdown:

- Placed here under your request, without sample sets I tried many different variants of this pokemon, from sub Z to band and finally landing on choice scarf as the best set, I was interested in using sub Z initially as it is the set that landed it in UUBL (from what I've heard) and seemed pretty strong, I placed it on a webs squad as a secondary defog insurance, I saw mixed success with this set but seemed hard to pull off and ultimately ditched it, Choice band was also enticing as it could 2hko corviknight cleanly with close combat and under the right circumstances became extremely powerful with a defiant boost, the set seemed cool but wasn't too practical leading to choice scarf being the preffered set, It is very nice as a scarfer outspeeding tapu lele and urshifu and without a sample set it leaves people guessing providing a bit of a surprise factor.

- Primary breaker, covers gapdos well, steel z is broken as always not a lot to say about ghold, broken mon.

- Added to provide stealth rocks, phasing, electric immunity and keeps the kantonian birds at bay mainly zapdos which would fry the rest of the squad.

- Wanted to create a nice fire, water and grass defensive backbone, originally I went for the classic heatran but I realised that there was no hazard control and I am not a fan of two ground weaknesses to 1 immunity, also carries the team vs the currently popular sun and also helps vs kyurem. Mixed set provides a counter to volcarona.

- Regenerator is king, defensive pivot to allow gapdos and friends in safely, future sight also pairs well with gapdos' close combat as a breaking pair.

- Wonderful frog, finishes the fire water grass core, prevents oger stomping everything here, provides extra electric insurance from the likes of tapu koko wittling down ting-lu which may be needed for other special attackers also improves kingambit MU if gapdos is chipped and can no longer check it.
Potential Changes:

- Utility moves such as thunder wave could be nice to slot in over slack off to provide a bit of speed control.

Some are not a fan of mixed moltres and this could be replaced back to hurricane or u-turn or whatever you might like here, Mystical fire could also be used over flamethrower.

Double hazards could be implemented or even maybe a rock move if you wanted to cover the likes of zapdos and moltres as best as u can.