The first Jeep is based off a Traxxas trx4 which comes with a Landrover Defender body. It has portal axles, high/low range and selectable diff locks. It's an amazing rig to drive. A standard TRX4 looks like this:
The 2nd Jeep is an Axial Bomber with a JK Wrangler shell adapted to it. It's very custom and is really fast. It's not really my thing, i prefer just to crawl.
And this is a standardish Bomber next to Bombercon:
