Well, it highly depends on what you want to study, computer science is pretty broad.
Probably the best way to figure this out is to pick your chosen subfield, then find out who is prominent in that field and then where they lecture.
For instance, Amsterdam has Tanenbaum, but if you're not into OS research then that is probably not going to help you. (I'm not even sure if he still lectures).
Yes, he does. Not much though. But he has quite some students working under him. Van Steen is also there and very active. But it largely depends on your field - software engineering sucks but AI, OS, DS or bioinformatics are pretty good I think.
Probably the best way to figure this out is to pick your chosen subfield, then find out who is prominent in that field and then where they lecture.
For instance, Amsterdam has Tanenbaum, but if you're not into OS research then that is probably not going to help you. (I'm not even sure if he still lectures).