John Preston - INTj
Brandt - ISTj
Obviously movie characters aren't always going to exhibit perfect representations of Model A, but I feel like the reason both of these characters are described as "intuitive" when it comes to detecting the emotions of others is because of the Dual Seeking function. Types are always good at recognizing their own Dual Seeking function in others, and I think Brandt and John are good examples of how dual seeking works.