From the article, some of the code names are as follows:
Hillary Clinton: Evergreen
Bernie Sanders: Intrepid
Donald Trump: Mogul
Barack Obama: Renegade
Bill Clinton: Eagle
IF the codes were based on reality, they might be as follows:
Hillary Clinton: Haridan or Virago
Bernie Sanders: Comrade or Maoist
Donald Trump: Blowhard
Barack Obama: Imposter or Unindicted Conspirator
Bill Clinton: Horndog or Pointer
Interesting, but I guess they are not so secret if they are in the British Newspaper. I like “intrepid” for Bernie “not-a-crook” Sanders.