Amadeus is available in Belgium Locality, and Netherlands locality. NL has the images, BE doesn't. If you need the BE profile for the french overview, you can add the NL temporary and copy the images to the BE profile.

Fearless BE, no images, NL seem pre-release images.

The Great Escape BE and NL both have images available. The NL images appear of better quality.

Gremlins BE and NL both have images. Again NL images appear superior.

Couldn't find Watchmen in your personal collection, so I couldn't check the UPC. The other ones I've checked are all the ones in your personal collection.