Kim DeLuca, Romance Author

Here are the 12 shirtless guys:

And here are 12 more covers in the "headless guy" category:

In comparison, there are only 4 covers with a single woman on it, and two of those are fantasy books. (And that first book is from the 80s, I think? Not sure why it's trending right now.)

There are more books featuring couples: 14 with at least one face partially/fully visible, plus 7 headless.

I was originally going to make a category for cartoon covers, but there were a few more that are not necessarily cartoons but are illustrated and not based on photographs, making a group of 8.

My final categories are rarer: 3 featuring relatively simple designs with a single element, 3 with a collage of elements, 2 plain covers, and 4 covers with blurry or faded elements.