From my research, I've found two main setups: Compact / portable and Large / permanent. With a JK like mine, there's not an option in my build for mounting something like 2 100W solid solar panels - something you'd see on top of an RV. That's not to say you can't pack them inside and deploy them with each stop. Personally, my setup (with the dual batteries) uses a NOCO Genuis setup for shore power if it's available. For solar, my long-term goals include some VMAX tanks, and a more robust power deliver system, complete with sine wave inverter. With most solar systems you need three things, the collector (panel), a charge controller to regulate the input, and a storage battery (and an inverter to use that power). Of course you can get fancier with volt meters and whatnot. But those three will get you started. General rule of thumb I've found is that you're only going to get about 40% of what the panel is rated at due to inefficiencies in the panels, resistance in the lines, cloud cover, angle, and just about everything else you can imagine that gets in the way of solar power.
Right now for solar, I'm running Sun Kingdom's 80W foldable panel with a waterproof charge controller that will charge my dual batteries when nothing is drawing from them, and it will offset my ARB fridge usage almost evenly, so I no longer need to start the Jeep as often on long excursions. I attach the solar clamps to my main cranking battery and my isolator will manage the charge level between the two. When the main battery is topped off, the isolator will connect them and the solar will charge both. It is at that point that my fridge (which runs off of the aux battery) will offset the incoming solar holding my charges steady. I put the panel on the top of my awning and tilt the awning for max angle to the sun. That's about as good as I think I can get short of a full blown residential panel/battery setup. That Sun Kingdom panel also has a USB output that will very quickly charge mobile devices and run lights / fans too.
Hope that helps.
