I think Dr. Who did many absolutely terrible aliens, but also had some very innovative ones. Twilight Zone sometimes had good concepts for aliens, though the execution tended to lack. Today, it seems to me, most SF writers and most SF movies merely reproduce already known forms, tropes and signs. Taking aside Arrival, which was great in some regards and bad in others, there have been incredibly few actually revolutionary aliens since Soralis, both book and movie. I can honestly hardly pinpoint even one example where the alien isn't some form of anthropomorphized being, or some play on an animals.
Far and few there have been tries to conceptualize other lifeforms as being gaseous, electric, wave-patterns, light, non-corporeal. Instead we get an infinite amount of aliens looking like various insects or reproductions of the grey men from mars, or following some horror aesthetic. Most of their language, customs, and culture, seems to be just a very slightly warped version of ours. Their societies barely work differenty, and in many, many ways, reproduce the basics of capitalism. Testimony to human fantasy