Our 2017 Ram 3500 dually came with Nexen Rodian AT tires. They are E rated and we used them for our Alaskan trip with a 2006 Arctic Fox 1150. I wasn't thrilled running tires I wasn't familiar with to Alaska last summer but they did fine for 15,000 miles of less than perfect road. They are still on the truck with our new heavier camper in the southwest for the winter. The tire ratings exceed the load in our case.
Is there a particular example you are concerned with?