According to most journalists, the ram on airsprings is the benchmark for the class, and is considered the most comfortable as far as ride quality. I haven't driven the Silverado or new sierra denali with the adaptive suspension, or the tundra on air springs, but between the ram and f150, I think the f150 is softer on smooth roads, but more bumpy on bad roads. Compared to my nav, most instances, I prefer my nav.
As far as the my22 expy and nav, the ones I've driven all had ccd. My current my20 nav has ccd as well, my my18 expy did not. First, ccd is a huge improvement in terms of comfort over the base springs imo. Ccd doesnt have the ride stiffness that my expy had sometimes. However the base springs have way better body control unless your in sport mode. Now btw old and new, the new trucks are an improvement, mainly in the control and bump isolation department, but they feel very firm compared to what the pre refreshed trucks offer. Compared to suvs I have driven, the escalade probably was the most comfy (at high speeds), followed by the wagoneer then the expy, which to me was superior to the yukon denali sans air springs. The ride difference btw them is actually not huge, but the air springs on escy and wag does help mitigate bump stiffness that the denali without air, my nav and current nav ccasionally has.
What kills the ford suvs ride for me is the body structure. It's just not tight and too loose. It jiggles and shakes far too often, and the rear end doesn't feel tied to the rear of the frame. The front suspension will glide over something, but same bumps hit in the back more abuptly, and shakes the window panes, giving it a crashy feel. This isnt all the time, just the times when the suspension decides to takes it "break". The gm and jeep trucks do shake, but not as much, especially on smooth roads, and they don't feel crashy even when their suspension make jarring hits.
New vehicle's don't have that nice of a balance as older early 2000s vehicles have. They are all too stiff. After driving some euro sedans like the e class and 5 series bmw, I still think my truck rides superior to them on the hwy, as well as my wife's cx9.