Theorist noun – Someone who theorizes (especially in science or art). Intellectual and theorist are semantically related. Sometimes you can use "Intellectual" instead a noun "Theorist". Nearby Words: theory, theoretical, theoretic, theorised
More intellectual-type folks might have heard of Slavoj iek, a critical theorist/philosopher famous for using examples from popular culture to demonstrate philosophical points (one wonders what he would think of TV Tropes).