Coming from several trucks with coil springs (and rear leaf springs) on the last 4 trucks I've owned, most of which I've modified their suspension systems significantly in one way or another, the air suspensions is the smoothest even with my night edition 22" rims. I've got a 4" lift on order for it, and when that goes on, I'm switching to 18s with 35s for added sidewall because I think this ride could get even better with more rubber.
I had rear drop shackles on my '02 ram 1500 and 20s on street tires. It softened the rear end too much compared to the front, so it was "hoppy" going over bumps at speed.
I had front leveling spacers on my '04 ram 1500 on 20s on street tires and later some nitto terra grapplers (leaning a little more all terrain) and added a hellwig rear sway bar. It was very planted, but could be jarring going over big changes in the road and while the truck was well planted, passengers could feel the G force in a corner.
I had a 3" body lift, plus cranked torsion bars and a rear add-a-leaf in my '05 ram 1500. I changed up the rims on that one and ran 18s with 35s. Loved the ride quality compared to all my previous trucks.
My sister had a 4th gen single cab 2013 with the 4 corner coil spring suspension and I also had a rental quad cab for a couple of weeks (~2014-2015 model year). I didn't hate it, but it definitely felt different to drive than my 3rd gens. I would guess that's closer to the 5th gen coil spring setup, though I haven't driven one. They were fine, but felt a little too car-like for me to want to step into a 4th gen with coils.
On my current 2022 limited, the air suspension system is jarring when I set it up to Offroad 2 (maximum), but Offroad 2 is for trail crawling, and reverts downward when you get up above 20ish mph for too long. You can feel the stiffness, and it's very reactive/bumpy. Entry/Exit can be similarly jarring, but more because of the bump stops if you roll over a parking lot pot hole. Entry/Exit has a limit of 5 mph, so you wouldn't be spending much time there either. In Normal or Aero modes, where I spend 98% of my time, you still know when you go over something big, but the truck never loses responsiveness and doesn't feel floaty like some GM trucks I've driven. Factory GM trucks feel disconnected between the cabin and the frame, like the wheels go one direction and the rest of the cab wants to keep going the other. Even on the Ram with the body lift, I never felt that disconnect.
I can't compare apples to apples with the coil setup in the 5th gens as I haven't spent a significant amount of time driving one other than test drives. To answer your question, the air suspension is "softish", but maintains good stability and handling. I'm not a fan of the factory Pirellis at all, but I've mostly been running all terrains for the last 10 years on my trucks. I'm hoping that switching from 22s on skinny rubber to 18s with fat rubber will improve the ride quality even more, and I've got a shopping cart with a Hellwig rear sway bar if the lift diminishes the handling.