Your coil pack (distributorless) ignition system means you have to be a little more picky than usual about what spark plugs you install.
Any conventional non-platinum plug will work fine but if you want platinum, it MUST have the platinum coating on both sides of the gap. That is known as a "double-tipped" platinum plug. A platinum plug with the coating on just one side of the gap will eventually cause hard-to-diagnose problems with the engine. Jeep has a TSB out to cover such problems where they pull single-tipped platinum plugs out.
One known good plug for your ignition type is the Autolite APP985. Note there are TWO p's in that model which indicates it is a double-tipped platinum plug.
Avoid plugs like Splitfire or Bosch Plus2 or Plus4 plugs. Splitfires are just junk and the Bosch Plus2 and Plus4 plugs don't always run well in a Jeep engine.
There are other good quality double-tipped Platinum plugs but for sure, the Autolite APP985 will work well. Expect at least 90K miles out of them, the benefit to platinum plugs... 3X better life.