What do you see with Walken that's IP>EJ?
His style of expression and demeanor even resembles some Si ESFjs I've seen like Rush Limbaugh, Bill Maher, Bill O'Reilly, etc, of course the content and focus of perception differs greatly between Walken and those Si ESFjs.
Walken does not have the same kind of refinement as the J-sub EJs, but the way he exerts control over his environment seems distinctly EJ. He doesn't show the kind of go with the flow passivity that Ni INFps demonstrate, like Strrrng, Starfall, Jung, etc. He is also more directly reactive to the immediate information as a P-sub than an Fe ENFj would be, and I think Ni ENFj fits for him.
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Noooo, Bill Maher = ILE ftw, lol. O'Reilly is LIE as far as I have heard, although I can't claim to have suffered enough of his blather to have a well-informed opinion.
But, for a certainty, back then,
We loved so many, yet hated so much,
We hurt others and were hurt ourselves...
Yet even then, we ran like the wind,
Whilst our laughter echoed,
Under cerulean skies...