Here are the updates I am making to the tier list.
Alolan Ninetales moved to tier 2: I personally feel this is a tier 1 deck, but the majority believe it is tier 2. Also people will eventually run counter to baby Alolan Ninetales, so the deck gets hurts a bit because of that. Not to say baby Alolan Ninetales is useless.
Drampa GX/Garbodor moved to tier 2: Too many people have stopped running a bunch of items and replaced them with consistent supporters. Especially because VS Seeker is going out of format.
Volcanion EX moved to tier 1: This deck has been wavering between tier 1 and tier 2, but for now I could see it in tier 1 because it gains Kiawe, Ho Oh GX, and Turtonator GX. This is a for sure tier 1 deck, but only if it has decent matchups against the 3 Water decks in the 2018 format.
Golisopod GX moved to tier 2: Golisopod is fairly hard hitting pokemon with a lot of health. It is easy to setup and can do even more damage by using cards like baby Lurantis. Because it is so easy to setup you can utilize Acerola to bring it up, and put it right back down. Plus if you have another one setup that counts toward First Impression.
Quad Sylveon GX moved to tier 3: This one I also feel is a tier 2, but some people say it is tier 3, and some even suggest taking it off the list. People say it has a lot of auto losses which I don't think is true, but majority rules.
Greninja BREAK moved to tier 3: I think this deck will do well, but the tier 2 has so many fast good decks I'm not sure if Greninja can keep up. It loses Dive Ball so you don't have as much consistency. I'm sorry Greninja lovers, but I'm not sure if the blue frog will be as dominant in the next format as it is in this format.
Tapu Koko GX removed from tier list: This deck is not very good, and won't see very much competitive play.