1. Click the link to the Transaction Details in your TLD list or domain list of your Freename account, e.g. for Polygon.
2. The Transaction Hash is your identifier for your mint. You can use this as well for searching the Blockchain Explorer.
3. Scroll down to "More details" and click on "+ Click to show more" to expand the view and click on "Decode Input Data". The name of the SLD or TLD will be displayed.
4. When you have minted more than one domain at the same time, your SLDs and TLDs will be listed all together in the field "Input Data".
Thank you to @Domino for the input.