Panaracer Gravelking slicks or Gravelking SS if you want something a bit more burly. WTB have some good options in that size as well, I've used Horizons on my commuter.

Panaracer makes the Rene Herse tires, so maybe I just need to keep trying on these… I wish there was a way to get to know the traction on your tires without risking your hip skin