I'm surprised ghostbusters only showed up on 5 top 10s, but even more surprised that 3 of those were international critics.
One of my operating theories on how the list ended up how it ended up is that because the critics are international, films that had a universal or simple premise naturally fared better, because the central conceit of some films just may not translate well internationally.
That may be one of the reasons some like it got is seemingly on every list. The central plot idea is relatively simple, and universally easy to understand. Ghostbusters is really wrapped up in ideas of 80s USA, with its anti government, anti regulation themes. It might not resonate well to non-Americans. Similarly, Coming To America might not be funny to international audiences, in that it sort of pokes fun at people moving to the US.
Christianity (life of Brian), Absurdity of Nuclear War (Strangelove), and slapstick humour (Airplane) are all things I can see being easily relatable across cultural lines.
Biggest surprise in the top 10 to me is Spinal Tap. Great movie, and I think it deserves its spot, but I would think that not all audiences would "get it".