Chirstie is the clear outlier; his numbers were so bad it made Hillary Clinton's numbers look good and she lost. Looking at the last few years he has ridden both sides of the political fence and offered nothing beyond talking about headlines, sniping at Trump and his supporters, and no policy statements. He has generated extensive political baggage for both Republican and Democratic contenders to use on him.
Christie in 2024 is in the same position Hillary was in 2016. He has high name recognition, low favorability, recent instead of old baggage, and almost no room to improve. Realistically his chances are between none and hell is in no hurry to freeze over for him.