Not the parent post, but working in finance, multiple products had a "scrambling" feature which replaced many fields (names, addresses, etc) with random text, and that was used upon restoring any non-production environments. It's not proper anonymization since there are all kinds of IDs that still are linkable (account numbers, reference numbers) to identities but can't be changed without breaking all the processes that are needed even in testing, but it's a simple action that does reduce some risks.
