Ram 4th vs 5th gen seats

On the 2019 and newer Ram 1500, 2500 and 3500 crew cab pickups the rear seats may be carry overs from the previous generation and body style. 

The quickest way to tell is to look at the rear row where the middle passengers knees would be, If there is a indention in that area you have the 4th gen rear seat (shown below)

The 5th gen pickups will not have the center indention (shown below)