While I could recommend several, to be honest, you should talk to a librarian who specializes in general fiction. (I used to work at a library). There is a wide range of romance from "sweet romance" to cozy romance to mystery romance to religious romance, fantasy/sci-fi romance, family romance and so on. Many libraries will attempt to cover the range. Mine will not carry erotica because of complaints (although it has some, it is not in a category by itself and it's reader beware so far as choices. We have to be adults about picking the choices and avoiding those we don't want to read).
There are some standard beloved authors (some of which you can tell by the best seller lists and any library should probably have at least a few on the best seller lists on the shelf).
Here are some "classics" that you will find at many libraries
Debbie Macomber
Jane Austen (this is a true classic and the library may have it already)
Georgette Heyer
Nora Roberts
Amanda Quick
Susan Mallery
I prefer my romance with a shot of mystery, so that is another whole category to explore, and here are a couple if indie writers with a good mix:
Karen Cantwell - Take the Monkeys and Run
Sarah Wynde: - A Gift of Ghosts
Julie Moffett (with carina press) - Lexi Carmichael mystery/romance series
Also in the romantic mystery and definitely a classic of the genre:
Elizabeth Peters - Vicky Bliss series (even her Amelia Peabody probably counts) -- The romance in this series takes place across multiple novels and in the case of Vicky Bliss is missing entirely from the first in the series so this author as a whole should probably be considered more under mystery, but again, it depends on what your patrons are after. If they want the more strict romance books where you get happily ever after in each novel, I wouldn't include Peters.
There are some standard beloved authors (some of which you can tell by the best seller lists and any library should probably have at least a few on the best seller lists on the shelf).
Here are some "classics" that you will find at many libraries
Debbie Macomber
Jane Austen (this is a true classic and the library may have it already)
Georgette Heyer
Nora Roberts
Amanda Quick
Susan Mallery
I prefer my romance with a shot of mystery, so that is another whole category to explore, and here are a couple if indie writers with a good mix:
Karen Cantwell - Take the Monkeys and Run
Sarah Wynde: - A Gift of Ghosts
Julie Moffett (with carina press) - Lexi Carmichael mystery/romance series
Also in the romantic mystery and definitely a classic of the genre:
Elizabeth Peters - Vicky Bliss series (even her Amelia Peabody probably counts) -- The romance in this series takes place across multiple novels and in the case of Vicky Bliss is missing entirely from the first in the series so this author as a whole should probably be considered more under mystery, but again, it depends on what your patrons are after. If they want the more strict romance books where you get happily ever after in each novel, I wouldn't include Peters.