Manchin is a democrat in a conservative state...his position on coal is how he's managed to maintain his position as Senator. But I understand where you're coming from in trying to attract more democrats to Trump. I just don't think orange needs it.
I see plenty of liberals admitting they were better off under Trump than under Biden. Inflation, the border crisis, illegal aliens receiving benefits earmarked for those with lesser income, our tax dollars going overseas to never ending wars, etc.
Of those on the list, I like Tim Scott or Kristi Noem. I'm guessing Trump has someone else in mind, but I don't know who that might be.