Yes, correct,
but mostly China. Jeeps, then Buicks, Volkswagens, Audis, then copycat BMW, Mercedes, and other clones which have nothing in common beneath their sheet metal.
Korea adopted Mitsubishi engines and designs for Hyundai cars from Japan, then spun off it's Kia division with help from Ford importing the Aspire sub compact here.
The LG major appliances sold here are US designs for North America and assembled in Mexico, at least ranges are for certain. Same with Samsung.
The Samsung cars were also Mitsubishi derivatives, but one flagship model I do believe was designed with help from Mercedes Benz.
The US still has a major military presence in N. Korea. Hyundai/Kia has and engine plant with Chrysler in Dundee Michigan, and an assembly plant in Georgia.
I do not think American companies are allowed to buy Chinese companies. Not yet, if ever. Not so long as any Totalitarian government rules China. No doubt China collects dowery's for allowing US companies to make goods there and export them here.