I remember how I was starting to think at the beginning of college, that with a reference sheet I could pick any language and start writing in it ... you know, C++/Java/Python, it all looked the same.

Then I applied for a course in Programming paradigms, that boiled to 4 weeks of haskell and then 4 weeks of prolog.

So, definitely add prolog to your list :-) It was eye opening :)