I believe Fighting Garbodor is the best deck in both formats.
This concept came to me from Kian on the way back from a league cup. Landorus and Buzzwole are both excellent in this Expanded meta because the spread easily takes double KOs on Night Marchers, while it hits weakness on Zoroark GX. In Standard, again you smack Zoroark GX while shutting Trade down, but gain other positive matchups against top tier options like Buzzwole Lycanroc (because Buzzwole is weak to psychic types) and Gardevoir. The matchups are definitely there; on paper the deck is an amazing meta call.
Making it work ‘in practice’
The good news is that in practice, Buzzwole Garbodor also works well…But it only works with a specialized list and a pilot who understands resource management well. Right from the jump Garbodor is a challenge because Garbodor-based decks are inherently far less consistent than other options such as Zoroark variants. This means the main goal should be to focus the deck around consistency and avoiding techs. What need is there for techs when you already have positive matchups against the entire top tier? A major advantage Buzzwole has, as opposed to Drampa, is needing a single energy to attack (rather than three). Sure Drampa can attack for one energy, but Buzzwole can continually attack with a single energy and win while Drampa would fall flat on it’s face without using Berserk at all.
Finding the right supporter line up is probably the most crucial part of developing this deck. Which subpar supporters to include and which to leave out is ambiguous; the overall supporter count is as well. For this deck, it is much safer to lean on the side of more draw cards. Finally, I had to make a good way to use the Trashalanche Garbodor with the deck. In Expanded this can mean a couple different things that I will cover later on in the article. But to start, this is my Standard Buzzwole Garbodor list