I would add Senator Warren who may supplant Sanders on the left. She has the most complete set of policies, many of which are interesting.
Only thing I dislike is that she seems to stray over the line into assuming private and public enterprises are necessarily corrupt. And that is a conceit of academia. The profit motive isn't wicked. It serves an important purpose for large parts of the economy. Restraint, yes. But mostly free, all the same.