This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 1234]

MusicBrainz5::CEntity
MusicBrainz5::CAlias
MusicBrainz5::CAnnotation
MusicBrainz5::CArtist
MusicBrainz5::CArtistCredit
MusicBrainz5::CAttribute
MusicBrainz5::CCDStub
MusicBrainz5::CCollection
MusicBrainz5::CDisc
MusicBrainz5::CFreeDBDisc
MusicBrainz5::CIPI
MusicBrainz5::CISRC
MusicBrainz5::CISWC
MusicBrainz5::CLabel
MusicBrainz5::CLabelInfo
MusicBrainz5::CLifespan
MusicBrainz5::CList
MusicBrainz5::CListImpl< CISWC >
MusicBrainz5::CISWCList
MusicBrainz5::CListImpl< CMedium >
MusicBrainz5::CMediumList
MusicBrainz5::CListImpl< CRelation >
MusicBrainz5::CRelationList
MusicBrainz5::CListImpl< CSecondaryType >
MusicBrainz5::CSecondaryTypeList
MusicBrainz5::CListImpl< T >
MusicBrainz5::CMedium
MusicBrainz5::CMessage
MusicBrainz5::CMetadata
MusicBrainz5::CNameCredit
MusicBrainz5::CNonMBTrack
MusicBrainz5::CPUID
MusicBrainz5::CRating
MusicBrainz5::CRecording
MusicBrainz5::CRelation
MusicBrainz5::CRelease
MusicBrainz5::CReleaseGroup
MusicBrainz5::CSecondaryType
MusicBrainz5::CTag
MusicBrainz5::CTextRepresentation
MusicBrainz5::CTrack
MusicBrainz5::CUserRating
MusicBrainz5::CUserTag
MusicBrainz5::CWork
MusicBrainz5::CExceptionBase
MusicBrainz5::CAuthenticationError	Exception thrown when an authentication error occurs
MusicBrainz5::CConnectionError	Exception thrown when an error occurs connecting to web service
MusicBrainz5::CFetchError	Exception thrown when an error occurs fetching data
MusicBrainz5::CRequestError	Exception thrown when an invalid request is made
MusicBrainz5::CResourceNotFoundError	Exception thrown when the requested resource is not found
MusicBrainz5::CTimeoutError	Exception thrown when a connection to the web service times out
MusicBrainz5::CHTTPFetch	Object for make HTTP requests
MusicBrainz5::CQuery	Main object for generating queries to MusicBrainz
MusicBrainz5::CRelationListList