G4S, Dollar Tree or a payday lender like Curo Holdings should go up in any major downturn. Specifically if/when AI craps out, some of the big losers in white-collar services would rebound, although I don't know enough to really give details on that. Lots, like Nestle or Goodyear, aren't countercyclical but will be fairly unaffected, because they aren't in tech and sell something people can't really do without.

Yes, everything in the market is exposed to volatility. In which direction can vary, though. If you have a crystal ball and know the bubble is imploding this quarter, you could also buy bearish options on things like Nvidia. (There's no off-the-shelf options that go out many years, I checked)