The most flat resistant tire I have used is the panaracer ribmo.

It rides like a wood wagon wheel, and wet grip is close to non-existent.

They do wear like iron though, sold that bike, I bet those tires are still in use somewhere.

I prefer tires that are more supple, how anyone can ride on flat proof tires for thousands of KM and enjoy it is beyond my comprehension, all of the rental bikes here use solid rubber tires, with truly soul crushing ride quality.