Old Fashioned/Sweet/Traditional Romance
These are books that some might call clean and wholesome. Originally released by as Silhouette Romances (or Harlequin Romance), they are sensual but contain no love scenes. From time to time, there might be some very mild cursing.
(Available now for $1.99 each)
Other Sweet Romance
Warm-hearted stories of love conquering adversity that can be read in a few hours.
Seasonal - A collection of novellas by three authors.
Romances That Are Part of Multi-Book Collections
The romances in all these books are stand alone to supply a satisfying ending, but each book is part of a series (by multiple authors) with a larger story.