On one of my touring bikes for routes that are mostly pavement I have been very happy with Schwalbe Marathon (with Greenguard) in a 40mm width, that bike is 26 inch, not 700c.
https://www.schwalbetires.com/bike_t...s/marathon_420
On that bike for routes that are more gravel and less pavement, I was running a 50mm wide Dureme tire, but that tire model is now discontinued.
I have not ridden the Schwalbe Mondial, but from the description of the type of riding you plan to do, that might be an option too. I suspect that the higher cost version rolls a bit better, I have usually found that the folding Schwalbe tires rolled a bit better than the wire bead versions.
https://www.schwalbetires.com/bike_t...rathon_mondial