Okay, I'm calling it:
Baltimore moves up to San Diego's pick and takes Ramsey. Dallas then drafts Elliott.
Makes sense to me. The Ravens apparently love Ramsey and they'd only have to move up 3 spots to make it happen. Newsome has missed badly in the last few drafts when he was picking for need. Now they want their best player available and he is tantalizingly close. They make the move and the Chargers are thrilled because they can still get their OT or Buckner.
Dallas, IMO, are truly fine with either Ramsey or Elliott and so aren't really sweating someone like Baltimore jumping them for Ramsey.
At 4 they are guaranteed one of the two.
That's what I can see happening.