Generally, automatic transmission Fords are NOT flat towable unless specifically designed and equipped for it. Many modern automatics will suffer internal damage if towed with the wheels rolling.
Some older Ford models with manual transmissions *might* be flat towable, but again, check your owner's manual. Even then, there might be limitations on towing speed and distance.
In short: There's no list of Ford cars that can be flat towed. You must consult the owner's manual for your specific year, make, and model of Ford. If it doesn't explicitly state it can be flat towed, then it shouldn't be.