I appreciate all the responses so far! After a bit of testing, I don't think Golisopod/Zoroark is too viable. As someone pointed out, they kinda do the same thing damage-wise. Sure Crossing Cut can get you a OHKO, but it's a one-time use. I think after trying out Zoroark, I noticed that it should be paired with something that can get OHKOs easier to compensate for Zoroark's limited damage ceiling. I haven't done enough testing with Ninetales/Zoroark, but I could see it working since Ninetales does have that OHKO potential.
What has been working for me is Drampa/Zoroark. It's much more straightforward because Drampa is a Basic so you only have to focus on getting Zoroark out. Drampa also has consistent OHKO potential. Since Fighting-types aren't huge in the Meta at the moment, you don't have to worry about poor type match-ups as much, although that may change when Buzzwole releases next month. Only time will tell.
I haven't been able to test it yet, but I do think that Zoroark/Decidueye could be amazing. Between Tapu Koko's Flying Flip, Decidueye's Feather Arrow, and Espeon EX, you have a deadly combination that can completely dismantle Gardevoir and Metagross decks. A full bench Choice Banded Riotous Beating with 3 Feather Arrows hits 210 which is enough to KO Golisopod and Ninetales for a single DCE. My biggest concern for the deck would be getting mulitple Decidueye out consistently, but if you're ale to do it, I don't see this deck losing that much.