If you haven't met someone like this yet, you will eventually.
The kind of person who never rises to the top - or if s/he does, by default, simply because everyone else has been fired/killed/whatever.
Who, in atmospheres of political infighting, is not seen as a threat or enemy by any of the factions, yet seems to be everyone's friend or at least neutral. The ultimate aim seems not be not power itself, but survival, but yet not getting away from such atmospheres totally.
S/he never gets fired in a downsizing, is never hated (may not be taken seriously though), temporary alliances with rival factions are accepted somehow and not seen as treason.
Which types would be most likely to fit such people?