In the field of machine translation, I'd say GF/MOLTO ( http://grammaticalframework.org/ ) is pretty cutting-edge non-ML AI (though the definition of what's AI keeps changing, I don't know if people would call this stuff part of AI any longer?).
Funny, GF is what made me reconsider my views! Amazing that a small team of non-ML academics outside the US can beat an army of ML researchers in companies like Google, MSFT etc.
