I write cozy mystery and ya urban fantasy. With the cozy I sometimes feel my books have little in common with other cozies, let alone suspense. Cozy is a super-broad sub-genre that has a very different reader profile than other mystery sub-genres. With ya urban fantasy, I feel like there’s a bit more of a crossover with other fantasy sub-genres but still, Harry Potter isn’t exactly comparable with LOTR or SOIAF.
So, in summary, my vote is breaking down to sub-genre where possible.