I think what you mean to say is there is nothing American about the Dodge Charger or Jeep Compass.
Stellantis is designing and engineering those cars now. Well, the charger maybe not.. That's on a platform from 2004. The compass is on an FCA platform shared by the Tonale, Hornet, and Rampage
Eg. Magna Steyr currently manufactures plenty of cars which are then sold under the BMW, Mercedes, Jaguar, or Fisker brand. Previously they've made cars for Chrysler, Jeep, Saab, VW, and others. Not just manufactured either, IRC they've designed entire cars or many of the component parts.
Similar thing for plenty of large companies. They don't actually make things anymore. They just brand and market them. Maybe they design them, but that's often not the case either.