The Myers-Briggs is used as standard for entry to senior levels the British Civil Service, and is highly respected in the recruitment trade.
As for Enneagrams; a colleague of mine became obsessed with them and ended up jacking in her £60k job to sign on for a myriad very expensive courses which encourage an almost mystical belief in their use for diagnosis and even treatment. Dunno what she's doing now, but I still recall her earnest huckstering for this 'miracle mirror into the soul'.