WB --
Oh, we have a lot of overlap in terms of industries -- I feel your pain on the varied formality!
And ditto for trying to get it right on the nuances; some will award points for looking pulled together/standard business casual-plus (formal for interviews) while it seems some will ding for same.
I'd think for an EA role that more polished and attentive to detail vs less would be good for an interview, though.
[Right, ha? Why must this be so complicated?]
I'm a middle-aged corporate creative these days so try to look just different enough in interviews, but not so wild as to scare the horses. Esp if I'm doing a matched suit since that ups the formality compared to coordinated separates (blazer + pants/skirt/dress).
And no need for high heels if they aren't your thing, but you might want to look for an almond toe -- or pointed, since they're on trend -- so you have some more length sticking out under fuller-leg pants.
Plus I always think a really sleek flat/small heel with skirts/dresses or pants looks so sharp!
If you are in shopping mode, not sure what you're considering but I prefer lightweight wool or wool-blend for the drape. Helps to fend off the boxiness, breathable, and resists wrinkles...yea.
Then after you get the job it can be fun to add those softer Romantic or FN touches to the more structured interview-y ones. I wear a lot of cardigans vs jackets these days to up my approachability factor, but lots of cardigans do have at least a bit of drama.
Oops -- almost forgot: you're welcome for the pics!