At this point, JD Robb books say "Nora Roberts writing as..." so people know.
I think it's best to stick to one coherent theme. I don't know Nora Roberts books to say how they differ from JD. I have never read her and after her temper tantrum against indies in 2019 (I think it was 2019) I don't wish to read her.
I have other, more personal reasons for disliking her as a person, but she was much sinned against as she was coming up--plagiarized by a big name, at a time when she probably had to weigh carefully whether she should fight or whether doing so would destroy her.
The one JD Robb book I read seemed to have the same kind of hunky intelligent hero as in many of her romances. The female lead had a bit more agency in that world, and the story was more hard-edged. Then again, in a romance when a heroine is attacked by an abusive ex-husband, you've got the hard edge there, anyway, if sometimes only briefly and then of course the hero rescues her. The JD Robb books are mysteries, so there are more bad people in them, I guess.
I've forgiven her for the romance about the lion tamer whose lover convinced her to stop being one because it made him nervous--I'm fairly sure that was Harlequin's edict. But although I initially was quite enthusiastic about her books, their perfection eventually grated on me. I tend to prefer stories with more emotional jagged edges, if that makes sense.
I had a personal relationship blow up in small part because of a disagreement about Nora Roberts' tirade against indies (she started reasonably, but then...), so I'll always have a negative association with her. But then I have no interest in her books. They don't appeal to me. I haven't read them, so I may be wrong, but they do look like the kinds of books where everyone is much more selfless and positive than is realistic. I thought the same thing when I read Bella Andre. There was nothing wrong with the books. The writing was solid. I simply did not believe the characters were real people. They were too good
Yes, I prefer books where people are flawed and their feelings don't always make sense. I don't like a tidy ending. This is a controversial choice in romance, but I've had a good enough career, so I can't complain. I think there is a large audience for more "real" romance, with real meaning more in-depth, emotionally messy, nuanced. Naturalistic, I guess? Even if the setting is more outlandish.
Billionaires, celebrities, shifters, whatever.
Unfortunately, sharp edges and edgy and similar words tend to mean "dark romance," which has the full range of over the top to nuanced character portrayals. And raw tends to mean overwrought emotionally. There isn't really a good word for more... realistic portrayals of humans. But what is realistic to me may not be realistic to someone else.
I always write men who appreciate their partner's intellect and ambition. It's not even a conscious decision I made. I just can't find anything else attractive.
I respect that some women really want to be full time moms and make that choice in books, but no one will ever make that choice in my books. (It's an over-represented path as is). Similarly, I will write a doctor heroine over a nurse heroine, not because doctors are better than nurses, but because there are many more fictional nurse heroines than doctor heroines. (Well, a med student, likely, as I tend to write younger characters). Etc, etc. I'm in my early 30s and I'm no longer the youngest person in most romance author or reader groups, but I am still in the bottom quarter. I don't know that we're really adding younger people to the genre, even with TikTok virality and whatnot.