My 16 F150 4WD Lariat 502a has power running boards. They come down a lot lower than standard running boards and make it real easy to get in and out of. Also the tailgate step is low, so is the tail gate itself.
I had a 2012 F150 4WD, and I hated it due to it being so damned high, and without a tail gate step, made it very difficult to get in the bed. I eventually got a 2014 RWD F150 and that was so much lower, and with the tailgate step, was a breeze to get in and out of the bed.
Check out an F150 with the power boards, you will be surprised how easy it is to just step right up into the truck.