Thanks for your questions. Not really the intent of my post but happy to answer:

The database is publicly available on this Notion page: https://melted-snail-13b.notion.site/23a6c31d1c404515aafcdfb...

I just added airports I knew, or looked interesting. I fetched the pics from Jetphotos manually.

Then using the Google API to search for the ICAO code + airport, eg "EHAM airport". Up to now, Google always hit the target.