I don't give two cents for the american auto brands but spare me the drama: try and make a proper car.
Looking at Ford: try importing a few models from the european line and offer it in the states. Small, economic, somewhat reliable, fuel efficient cars.
Stellantis has a slew of models that could be brought into the american market. They make good cars.
And I'm willing to bet GM as a few models they build and market overseas that would be guaranteed sucesses.