Your description of the Shaw book captures the distinction between "urban fantasy" and "paranormal romance," an ever-moving line or (better) fuzzy set.
I want to say that the amount of sex is a dividing line, but really I suspect it's marketing.
Then there are the ones who will accept ONE bit of the fantastic, such as a skeleton as a main character, but no other fantasy.
Are you thinking of a specific book with a skeleton as a main character? I got stuck thinking of Max Gladstone's Three Parts Dead (2012) and sequels, which have a lot more than just a skeleton.
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I want to say that the amount of sex is a dividing line, but really I suspect it's marketing.
Then there are the ones who will accept ONE bit of the fantastic, such as a skeleton as a main character, but no other fantasy.
Are you thinking of a specific book with a skeleton as a main character? I got stuck thinking of Max Gladstone's Three Parts Dead (2012) and sequels, which have a lot more than just a skeleton.