Looks like the first one you just set the camera to 5500K without doing a manual white balance off a gray card. Most cameras, this just adjusts the orange-blue axis because the orange-blue axis is what defines color temperature. When you set to a number by twisting a dial or picking a number off a menu, the camera does absolutely nothing with the green-magneta axis. Unfortunately, the green-magenta axis is very important with discharge lamps like fluorescents, HMIs, and LEDs.
Most cameras' AWB these days takes care of both axes. Similarly, so will doing a manual white balance off a gray card. Which is why balancing off a gray card is the "normal" procedure.
