I read it a few months ago, but I think I might still be able to remember a bit.

Macbeth - INTJ (he's clearly not healthy, but I think the sickness might come from losing connection with reality - weak Se - and he is also a good military commander)

Lady Macbeth - ENFJ? (some of you will disagree because she's "too cold and brutal" to be a feeler (playing only on stereotypes), but after analyzing the character a bit (and writing an essay), I think most of her motivations have to do with her love for Macbeth)

(I can't really put a good argument up for any of the following if it be demanded.)

Banquo - ISxJ?

Macduff - ESTJ?

What do you think?