LaVyrle Spencer! Somewhat dated smut, avoid “That Camden Summer” if rape would put you off (that’s not the smut part, FWIW, it’s a thing that happens to the heroine during the course of the story, but it’s definitely depicted), but otherwise her stuff is fun. And really smutty.
On par with the Outlander or Bridgerton novels. I’m in the mood for something smutty, but more thought provoking than what the Harlequin-type books or Fifty Shades have to offer.