I think it's a valid question, uncomfortable but important. I didn't vote Labour - or for any mainstream party - this week but I've not decided about the general election yet - I'm waiting for the manifesto.
Anyway to answer the question, in addition to the names already mentioned, I've seen Rachel Reeves suggested. Yes I remember her ducking and diving in that interview with Nick Ferrari so I'm, at best, ambivalent about her but, if correct, it would certainly be good to have support from a big hitter.
I've also heard Bridget Phillipson mentioned.
Struggling to think of any others, unless we're going to include Wes Streeting!
The new intake of Labour MPs worries me as I very much doubt many openly GC candidates will have got through selection.
I fear, but don't know for a fact, that the Labour National Executive will be largely TWAW supportive, and that's another concern.