After towing 2004, and 2016 Wranglers, I am now towing a 2020 Jeep Gladiator.
I have the gas, not diesel, but there is no difference from towing the previous Wranglers aside from making sure the push button ignition is in the "off" position before towing.
Nothing different in the way of steering or brakes.
Again, I have the 3.6 gas, not the diesel. Hopefully an oil burner will chime in.
There is an issue with the dual battery set up that some are having. Battery drain while towing due to the Jeep "waking up" when the lights are activated by the RV.
There is a long thread about this in the JL Wrangler Forum.
I have not had any battery problems though using a Cooltech LLC flat tow wiring harness.
2005 Holiday Rambler Admiral SE 30pdd
2020 Jeep Gladiator Rubicon - Maximus-3, Blue Ox, RVi3, Cooltech
1993 Reinell 20' 5.0l - good old boat