Lots of options out there for sure.
Baja Designs and Diode Dynamics IMO are currently best. For white lights I prefer Baja's color temp of 5000K to DD's 6000K, but you can clear lens swap DDs 3000K yellow lights which use 4000K diodes for a very nice white. Baja's OnX6+ light bars are insanely...
If you can manage to find a Mopar rad that would be the way to go. I put in a 1-row Spectra Premium (CU1193) 6 years ago now from RockAuto when they carried them and its' been flawless.
But whatever you get you don't need more than a 1-row radiator. The stock XJ cooling system gets the job done...