The Order Estimate JSON files do not include product names. For reference, the standard Invoice JSON files contain all the same information present in their corresponding PDF files — product names, user counts, prices, billing periods, etc.

For now, the alternative is to use the Commerce REST API to retrieve this data. In particular, Quotes expose upcomingBills, and you can retrieve offering and pricing plan IDs from both quoteLines and upcomingBill.lines. These IDs can then be resolved via Offerings to obtain detailed product information.

The recommendation is to include product information directly in the Order Estimate JSON payloads, so that they can be used more reliably without requiring additional API calls.