In years past, the shonen anime demographic was dominated by the legendary "Big Three." Now, in a newer generation, fans have a "Dark Trio" to think about instead. All three series in that trio are bloody, dark shonen action series, and they have plenty of thematic overlap. They all have monsters and graphic action sequences, but they're hardly identical. These three series also have plenty of unique ideas, including Chainsaw Man.
Source：https://www.cbr.com/chainsaw-man-vs-jjk-vs-hells-paradise/
