Here's a good link.
http://www.rambodybuilder.com/2014/d...ammlup1500.pdf
On the low end you have a 2wd, regular cab, short bed Tradesman at 4,512 lbs.
On the high end you have a crew cab 4x4 with the diesel at 6,147 lbs.
On Ram's site they list the lightest as a 2wd, regular cab, short bed Sport, 4,525 lbs.
According to Jeep's webpage a 4 door Rubicon is 4,340 lbs.