Dillonbuck,
Yep, those are the three methods I know of. Plating is is how Federal Fusions are made, and Speer Deep Curls were made.
Dunno about increasing friction between jacket and core, but several bullets feature jackets that lock at least part of the core to the jacket. They aren't actually bonded, though they can work pretty well, with the prime example being the Nosler Partition. Others are the Hornady Interlock and Speer Grand Slam, which like the Interlock features a ring inside the jacket.
