Which KDP genres need the strongest covers to attract readers?

[ceciliamoore]

Hi everyone, I’ve been researching how much cover design affects book sales on Amazon KDP, especially in competitive genres. Which genres do you think rely the most on strong visuals and first impressions? I’m also looking for honest suggestions about the best book cover designers people have worked with. What qualities actually make a cover stand out and improve clicks or conversions on KDP?