Never heard of any of these people. Also 538 is often wrong on research, famously predicting Trump would lose the presidential nomination with only a 20% chance of winning. HuffPoo has an interesting article on "what's wrong with 538.
Jim Wallis in particular is a total fake, he’s a Democrat political operative masquerading as a Christian. He’s also a Soros stooge. A real snake.
Irony is he and Campolo claim all you have to do to be a Christian is to read Jesus’ words and you can ignore everything else. The “Red-Letter Bible,” but even there they ignore Jesus words that condemn sexual immorality, say marriage is between a man and a woman, and say that the sexually immoral are going to Hell. (E.g., they don’t acknowledge Jesus’ words in the Book of Revelation—also marked in red in my Bible.)