As it stands, identifiers are displayed in the order they were added. This creates an unsightly inconsistency across different pages. Examples:

https://bookbrainz.org/author/318a8df4-d9e0-4007-b620-ee9f75d1aa39

https://bookbrainz.org/author/48e41623-d9ed-4489-9df5-4859a29fe1a2

In my opinion, sorting them alphabetically like on MusicBrainz would be a good solution.