The "mystery" has been mostly solved in the fluff piece today about #MittRomney. Romney and other large donors formed the #NoLabels political party with Romney being the one who approached #JoeManchin to be the candidate to siphon democratic and independent votes from Biden.  

https://www.theatlantic.com/magazine/archive/2023/11/mitt-romney-retiring-senate-trump-mcconnell/675306/

#NoHonor