At Adobe Stock, we define illustrative editorial as conceptual imagery designed to illustrate articles on current events and newsworthy topics. This type of content often features images of real brands and products — like signs on buildings, soda cans, computers, and cars — to convey a story. Illustrative editorial content is made available to Adobe Stock customers for editorial use only.

Illustrative editorial isn’t the same as editorial content, which documents events or incidents that are currently occurring or developing, or that have already occurred. We do not accept traditional editorial content at this time."

It's most likely that the Moderators do not believe that there is any "current event or newsworthy topic" for which a picture of a lighthouse is needed. 

There is no avenue to dispute the findings of the Moderators, so don't even waste your time trying to contact Adobe to get a second chance. You can try submitting again without using the illustrative editorial category. I'm not sure whether the lighthouse would earn an IP rejection.

By the way, viewing these on my iPad, they all look quite oversaturated.