First place to start looking is to check the
Motorhome Magazine Dinghy Towing Guides is a great place to start. It provides a great overview, but doesn’t get into many details.
The ultimate authority is the actual Owners Manual that came with the vehicle. In most cases you can do a
Google Search with the year make and model to find one online. But you will want to verify with the actual owners manual of that vehicle to be sure since sometimes the online ones might differ from the actual. Generally speaking you want to look for the section on "Recreational Towing" in the owners manual.
Even vehicles that could be towed one year might not be recommended the next year, either changes to electronics, transmission, engine or the bean counters can all influence the change.
Jeep probably the biggest line up of flat tow-able vehicles. The Wrangler is one of the most popular toads that I see, but you see a lot of others too.