Jess Phillips seems popular but we need to wait and see who comes forward.
I believe Corbyn, McDonnell and Momentum should all disappear from politics completely. Corbyn was the main factor in the defeat, not Brexit, because Brexit was also present in 2017. The one thing that I have never seen in a GE is Labour protest votes (anti Corbyn) going to the Tories. They usually go to some other party, but for traditional Labour voters to vote Tory is a damning indictment of Corbyn, McDonnell and Momentum.
Now we have a Conservative Government and Mr Johnson has to deliver the costly improvements that were promised before and during the election. Will the promises turn out to be excuses? We'll see.