I wonder if anyone collects a list of famous standards that have been superseded by compatible, better standards. Another example would be that many people know of ISO 639 language codes, but BCP 47 is a clearer, more relevant standard.

If you really want to know, ask Wikipedia. There are some lists there that make me think somebody has a major case of OCD. There is even a List of Lists on Wikipedia, so ... wait, there is even a List of lists of lists...