Something I've noticed lately while browsing Apple Music is that the albums are archived during the collections of the artist's profiles. This makes it super easy to miss an album on someone's profile. Sometimes the rating makes sense (such as the Greatest Hits album or remix album), but other times it doesn't. For example, I just went to Björk and her third album Post is under compilations, while the rest is under album. I did a quick check on some other artists, so here are other examples: Led Zeppelin's Mothership, Sylvan Esso's second album, Bebe Rexha's debut album, Bishop Briggs debut album and some of Madonna's albums are categorized as compilations.
There are other things that do not make sense. Rihanna's more remix EP is categorized as album. Solange EP is listed as a compilation, while remix EP is categorized as an EP. I do not understand why the classification system is so inconsistent. Does anyone have an explanation for this?