They are all different purposes.
Cloudburst is rain gear. No warmth or insulation at all.
Mountain jacket is a very light weight early season jacket. Again, no warmth but does have wind-stopper
kelvin is a puffy jacket. Very warm and made to wear under another layer such as the Cloudburst rain coat.
Fanatic is hands down the warmest jacket I have. It’s meant for stand hunting. You wouldn’t want to still hunt or hike with it. Way too warm for that.