Apparently nobody at Apple listens to classical music. To be fair, they have finally made some improvements, both in the iOS Music app and in iTunes, as long as you've entered all of the necessary metadata (on iOS specifically, you need to make sure that the grouping – followed by a colon – is a prefix of each track name). But there are still inconsistencies between the Apple Music catalog and the local library view. It is also often needed to make some adjustments using iTunes after adding Apple Music tracks with imperfect or incomplete metadata to your library, which thankfully works the same way as it does for matched and uploaded music.
