Three files in ~/files go to the bucket market-records-1w0uk3s, each under its own name. Choose the storage class from how each one is used:

1. catalogue.json: the shop reads it on every page view.
2. q3-report.pdf: finance opens it a couple of times a month.
3. tax-2019.zip: kept for the auditors for seven years, probably never opened.

Check each upload's class with head-object.