like any vehicle, each make and model and year is subject to differences, so I wouldn't want to make any sweeping answer that 'all' Jeeps are towable 4-down, even though it may at first seem likely.
Jeep is also a wide brand, model wise, and some will be, while others won't be.
A new 2020 model might not be one that many of this forum have yet to have behind their motorhome, or may not have the same model line you are referring to, as there are several - the Jeep website should be able to have a download of the owner manual to spell this out specifically.
Years ago, back in 2007 when the first Jeep 4-door models were available, I ordered my new 4-door JK Wrangler, and drove it happily for 7 years, then traded it for a new 2014 Cherokee Latitude right before we decided to go 'RVing' in a new motorhome, and wanting to 'tow' our vehicle behind us.
What I found out is this: Neither the '07 JK would have been towable 4-down, OR the new '14 Cherokee Latitude. The JK Wrangler was a two-wheel drive, automatic, and Jeep the transmission didn't allow for towing it in Neutral. The Cherokee was also two-wheel drive, and automatic, and had no 'neutral' button that allowed it to be towed 4-down, even though 'some' Cherokees of the same year and model WERE able to - they had the 'Active Drive II' option, which DOES have the 'neutral' button to allow 4-down towing.
Crazy, but true, and while we would ultimately dolly the Cherokee for a few short months, we then trading that new car in for a '14 Ford Fiesta which was easily and readily able to be towed 4-down, even with it's front wheel drive and automatic transmission - just put it in Neutral and go! We towed it over 50,000 miles with no issues. Now we tow a '14 Ford Focus, and have towed it another 50,000 miles! FUN!
'14 Thor Palazzo 33.3 compact diesel 100k+miles since '14... US, Alaska, Canada...
AND a '14 Gulfstream Amerlite
AND a '07 ForestRIver Rockwood