Comment by tracker1

GUIDs are UUIDs are effectively the same thing... the issues often come down the the means of generation and storage... where UUID have versions with specific implementation details that aren't always followed, MS has internal implementations that also aren't always followed. Also worth being aware of are COMB, SequencialIDs (MS-SQL) and other serialization approaches as well as how they affect indexes in practice.

Alternatives include sequencial number generator services, or sequence services that may be entirely sequencial, etc, but may lead to out of order inserts in practice.

Also, generally worth considering UUIDv7 assuming your sotrage and indexing use the time portion at the front of the index process.