I'm guessing that your 2010 EL Limited came equipped with 10-way power, heated and cooled seats with memory function as standard equipment. Any 2009-2017 Expedition, Expedition EL, Navigator, or Navigator L with 10-way power, heated and cooled seats with memory function should swap into your truck. From 2009-2014, only Limited and King Ranch Expeditions had these options (they were standard on Navigator). Starting in 2015, however, even some XLT trucks came with these seats. Also, a new top-of-the-line Platinum model appeared and it has these seats as standard equipment.
Keep in mind, to avoid any programming issues you should probably retain your existing DSM (under the driver's seat) and Climate Control Seat Module (CCSM, under the passenger seat). These modules are programmed specifically for your truck. Also, remember what I said about retaining your existing OCS module for the passenger seat. And, of course, the fact you have side impact airbags mounted in the front seats. All the wiring for these systems is safety critical.
Even though it seems like a lot of trouble, the safest route for your passenger seat might be to take it out, remove the seat back, take off the seat covers, remove the seat back foam, but keep the seat bottom foam (unless it's shot) and then swap over only the seat back foam and seat covers from the new passenger seat. This will avoid altering any of your existing wiring and airbag safety systems.