Jeep will survive in some form because it's a well known brand name that still sells relatively well.
As for the rest (Chrysler and Dodge) I'm not so sure. They may have to go away. If they stick around, at least one of the two brand plates will have to go. I could see them dumping Dodge, keeping Chrysler, but slimming the model lineup down quite a bit.
Overlapping domestic brands are dead. No more are the days of same car, different trim between corporate brands.