Tandem Tow Dolly

Never understood the concept of a tow dolly, 1/2 of your drive line is getting wear and tear and the other 1/2 is not. Flat bed would cost more but the resale would be there in the end. Of the 3 I take the tandem tow dolly, but if the incremental expense is there go flatbed.

I believe the only good way to do it is with a flatbed trailer long enough to fit both.
Trailers with a deck that tilts for loading are easier to use.
Guys I know of who carry a car and a golf cart use ramps to the side and load the golf cart sideways.
A 20-footer should do it. A Camry is about 16 feet long and you can probably overhang a little of it off the front, leaving five feet behind it. Golf carts are usually only four feet wide.

When you pull a car as far forward as you can on the trailer deck, figuring out how to chain down the front can be tricky but once you come up with a method you'll be fine. You may want to weld on some custom tiedown rings right where you want them, or have a shop do it if you don't have a welder.

If the trailer is too nose-heavy with the car way up forward, you might try backing the car on instead.

The Swivel Wheel - hate it. You don't want anything with those tiny little wheels which will spin at a zillion RPM on the freeway. Bearing and tire trouble are written all over that.

The Tandem Tow Dolly would have the advantage of being able to unload the car without unloading the golf cart, or vice versa. BUT... I consider that a lousy trade-off for being virtually impossible to back up. I wouldn't use it.

A big flatbed will have brakes on all axles, it will tow best, you can back up with it, you can probably even fit other miscellaneous stuff on it, and/or use it for other things. And it's the least janky. It'll have real axles and tires and won't have a whole bunch of joints and swivels and pins and other garbage to make it work.

If you buy a car trailer, don't loan it to anyone. (Trust me, they will ask.) It will always come back with something bent, broken or missing.