Use MusicKit's User Library Artists with Catalog Artists?

When making a call to https://api.music.apple.com/v1/me/library/artists to get a user's library artists, it returns the following (as an example):

[
  {
    id: 'r.FCwruQb',
    type: 'library-artists',
    href: '/v1/me/library/artists/r.FCwruQb?l=en-US',
    attributes: { name: 'A Great Big World' }
  },
  {
    id: 'r.7VSWOgj',
    type: 'library-artists',
    href: '/v1/me/library/artists/r.7VSWOgj?l=en-US',
    attributes: { name: 'Aaliyah' }
  },
  ...
]

If I try and use an artist id from that retuned data to look up additional information about the artist by calling https://api.music.apple.com/v1/catalog/us/artists/{id}, it fails.

User Library Artists don't seem to equal Catalog Artists.

It'd be great if there was a way to use these interchangeably. Am I missing something?