What books are like King of Greed but spicier?

7 rated books share at least one trope with King of Greed, which rates 3/5, and each rates spicier on our 0–5 scale. The closest match is Fifty Shades of Grey by E. L. James.

1. 
   Fifty Shades of Greyby E. L. JamesAlso billionaire; spice 5/5
2. 
   Fractured Freedomby Shain RoseAlso second chance; spice 4/5
3. 
   Reflected in Youby Sylvia DayAlso billionaire; spice about 4–5/5
4. 
   Black Ties and White Liesby Kat SingletonAlso billionaire; spice about 4/5
5. 
   Bared to Youby Sylvia DayAlso billionaire; spice about 4–5/5
6. 
   My Dark Romeoby Parker S. HuntingtonAlso billionaire; spice about 4/5
7. 
   Wild Loveby Elsie SilverAlso billionaire; spice about 4/5

Picks share at least one trope with King of Greed. They're listed by how closely their tropes match, counting the tropes either book has, then by popularity. Spice is on our 0–5 scale, and ratings marked "about" are estimates. Each book page lists the sources behind its ratings. How we rate