Walken is too adept at Fe to pass as Gamma, especially Fe polr (.i.e. INTp.) Nor do I hear any Te in his speech.
What I mean by too adept at Fe is, Walken's demeanor and voice easily convey various moods (drama, excitement, affection, wistfulness, etc,) which Fe polrs usually cannot. (Fe polr actors are thus pretty rare.)
Walken is not as expressive as some other EIEs. He's the Ni subtype.