The ones that matter are Biden, Warren, Klobuchar, and Butiigieg. The rest are filling gaps.
Bernie is an angry old socialist malaka who had a big hand costing Hillary the election.
And Warren needs to get away from the liberal “bold” talk. Plans don’t get you elected, and she has many. I call them dreams. She needs to come to consensus, and that is reality. As a VP, she could get issues talked about a lot, and some good stuff to come out of it. Not much beyond that.