Historical

1. Tasha Alexander

2.  Jane Austen

3.  Mary Balogh - 4

4.  Heidi Betts

5.  Jo Beverly - 5

6.  Maeve Binchy

7.  Roseanne Bittner (early books)

8.  Joanna Bourne

9.  Celeste Bradley

10. Gwen Bristow (no longer with us)

11. Charlotte Bronte

12. Gayle Callen

13. Anna Campbell

14. Marsha Canham

15. Liz Carlyle

16. Susan Carroll (Susan Coppula, Serene Richards)

17. Kathryn Caskie

18. Loretta Chase - 9

19. Nicola Cornick

20. Bernard Cornwell

21. Thomas Costain
22. Dee Davis

23. Christina Dodd

24. Sara Donati - 3

25. Meredith Duran

26. Jane Feather

27. Diana Gabaldon - 7 (also T/T)

28. Dorothy Garlock - 4

29. Julie Garwood - 8 (also contemporary)

30. Roberta Gellis

31. Sergeanne Golon

32. Jo Goodman

33. Anne Gracie - 2

34. Posie Graeme-Evans - 2

35. Phillipa Gregory - 2

36. Laura Lee Guhrke
37. Rachel Hawthorne (Lorraine Heath)
38. Virginia Henley

39. Georgette Heyer

40. Elizabeth Hoyt

41. Madeline Hunter

42. Judith Ivory - 5 (also Judy Cuevas)

43. Eloisa James - 3

44. Beverly Jenkins - 2
45. Susan Johnson - 3 (also contemporary)

46. Susan King

47. Laura Kinsale - 4

48. Kelly Kirch (also T/T)

49. Lisa Kleypas - 4 (also contemporary)

50. Lynn Kurland - 2 (also T/T and paranormal, contemporary)

51. Jill Marie Landis (also contemporary)

52. Julia Latham

53. Stephanie Laurens - 2

54. Edith Layton

55. Kim Lenox

56. Johanna Lindsey - 3  (also T/T)

57. Julie Ann Long

58. Kat Martin - 14 (also contemporary and paranormal)

59. Robin Maxwell - 2 

60. Helen McGinnes

61. Laurie McBain - 2

62. Teresa Medeiros - 3

63. Linda Lael Miller - 6 (also contemporary and T/T)

64. Pamela Morsi

65. Maggie Osborn

66. Jenna Petersen

67. Candice Proctor

68. Mary Jo Putney - 3 (also contemporary, also paranormal)

69. Amanda Quick - 4 (Jayne Ann Krentz, Jayne Castle)

70. Julia Quinn - 6

71. Patricia Rice

72. Rosemary Rogers

73. Sharon Sala (Dinah McCall)

74. Barbara Samuel - 2 (also contemporary)

75. Amanda Scott

76. Susan Holloway Scott

77. Anya Seton  (no longer with us)

78. Samuel Shellabarger 

79. Susan Sizemore

80. Frank Slaughter

81. Bertrice Small - 3 (also contemporary and paranormal)

82. Cheryl St. John
83. Libby Sydes

84. Tracy Anne Warren - 2

85. Christine Wells

86. Jan Westcott - 2

87. Kathleeen Woodiwiss - 5 (no longer with us)

88. Susan Worth
89. Frank Yerby

Contemporary

1.   Catherine Anderson - 2 (also historical)

2.   Susan Andersen

3.   Donna Andrews

4.   Lori Avocato - 8

5.   David Baldacci
6.   Carol Bellacera

7.   Maya Banks

8.   Lori Barrill

9.   Maeve Binchy

10.  Toni Blake

11.  Barbara Taylor Bradford

12.  Suzanne Brockman - 4

13.  Sandra Brown - 4 (also historical)

14.  Robyn Carr - 2 

15.  Mary Castillo 

16.  Janet Chapman

17.  Lee Childs - 2

18.  Tom Clancy
19.  Harlan Coban

20.  Michael Connelly - 3
21.  Jerri Corgiat

22.  Catherine Coulter - 2 (also historical)
23.  Susan Crandall

24.  Deborah Crombie

25.  Jennifer Crusie - 8
26.  Janet Dailey (also historical)

27.  Jordan Dane - 2 

28.  Lindsey Davis

29.  Jeffrey Deaver

30.  Barbara Delinsky - 2

31.  Nelson DeMille - 2

32.  Jude Deveraux - 6 (also historical and some T/T) 
33.  Diana Diamond

34.  Eric Jerome Dicky

35.  Eileen Dryer - 2

36.  Carola Dunn (also historical)

37.  Janet Evanovich - 6

38.  Fanny Flagg

39.  Joanne Fluke

40.  Lori Foster - 3

41.  Nina Foxx - 6

42.  Dick Francis
43.  Judith French (also historical)

44.  Patricia Gaffney (also historical)

45.  Lisa Gardner - 3

46.  Elizabeth George

47.  Cindy Gerard
48.  Tess Gerritsen

49.  Rachel Gibson

50.  Heather Graham - 4 (also paranormal)

51.  John Grisham

52.  Kristin Hannah - 2 (also historical and time/travel)
53.  Karen S. Harper

54.  Ellen Hartman

55.  Christiane Heggan

56.  Beth Henderson 

57.  Joan Hess

58.  Kristan Higgins
59.  Reginald Hill

60.  Sandra Hill - 2

61.  Vicki Hinze

62.  Tami Hoag - 2

63.  Diana Holquist

64.  Linda Howard - 9
65.  Charlotte Hughes - 2

66.  Greg Iles

67.  Brenda Jackson
68.  Lisa Jackson

69.  Iris Johansen - 7 (also historical)

70.  Andrea Kane - 2 (also historical)

71.  Jan Karan

72.  Laurie R. King
73.  Stephen King

74.  Angela Knight - 4

75.  Jayne Ann Krentz - 5 (Amanda Quick, Jayne Castle)
76.  Martha C. Lawrence

77.  Suzann Ledbetter

78.  Lora Leigh - 2

79.  Rosini Lippi

80.  Elizabeth Lowell - 3

81.  Robert Ludlum

82.  Carol Lynne
83.  Debbie Macomber

84.  Susan Mallery

85.  Margaret Maron

86.  Ngaio Marsh

87.  Deidre Martin

88.  Nancy Martin

89.  Erin McCarthy

90.  Colleen McCullough (also historical)

91.  Judith McNaught - 7 (also historical)

92.  Marliss Melton - 2

93.  Stephanie Meyer - 3
94.  Judith Michael

95.  Kasey Michaels (also paranormal)
96.  Jacqueline Mitchard

97.  Carla Neggers
98.  Brenda Novak

99.  Kathleen O'Reilly

100. James Patterson

101. Elizabeth Peters

102. Susan Elizabeth Phillips - 14

103. Jodi Picoult - 3

104. Jane Porter

105. Marcia Preston 

106. Kathy Reichs

107. Luanne Rice

108. Karen Robards - 3

109. Nora Roberts - 14 (also paranormal and historical)

110. Karen Rose - 5

111. Ann B. Ross

112. Sharon Sala - 2

113. Meryl Sawyer - 3

114. Lisa Scottolini

115. Kathleen Gilles Seidel

116. Maggie Shayne (also paranormal and T/T)

117. Sidney Sheldon

118. Gena Showalter
119. Anita Shreve
120. Anne Rivers Siddons 

121. Danile Silva

122. Christina Skye - 2 (also historical, paranormal)
123. Karin Slaughter

124. Alexander McCall Smith

125. Deborah Smith - 5 (also historical, paranormal)
126. Annie Soloman

127. Nicholas Sparks

128. LaVyrle Spencer - 8 (now retired - also historical)
129. Erica Spindler
130. Mariah Stewart

131. Kelley St. John

132. Danielle Steel

133. Mariah Stewart

134. Mary Stewart

135. Anne Stuart (also  historical)
136. Carlene Thompson

137. Brad Thor

138. Altonya Washington (also historical)

139. Tawny Weber

140. Annie West
141. Susan Wiggs (also historical)

142. Lori Wilde

143. Gayle Wilson - 2

144. Lois Winston

145. Joan Wolf (also historical)

146. Herman Wouk
147. Carlos Ruiz Zafan

148. Zane 

Paranormal

1.  Lora Adrian

2.  Catherine Asaro

3.  Amanda Ashley (also historical)

4.  Jennifer Ashley

5.  Keri Arthur - 2

6.  L. A. Banks

7.  Michelle Bardsley

8.  Sandy Blair (T/T)

9.  Donna L. Bolk  (also contemporary)

10. Patricia Briggs

11. Lois McMaster Bujold

12. Jim Butcher 

13. Jayne Castle - 2 (Amanda Quick, Jayne Ann Krentz)

14. Kresley Cole - 3 (also Historical)

15. MaryJanice Davidson - 2

16. Alyssa Day - 2 (also contemporary-Alesia Holliday)

17. Kate Douglas 

18. Christine Feehan - 18

19. Jacqueline Frank - 2

20. Jeaniene Frost

21. Colleen Gleason

22. Laurell K. Hamilton - 4

23. Charlaine Harris - 2

24. Kim Harrison - 2

25. Robert Heinlein (no longer with us)

26. Kay Hooper - 4

27. Dara Joy

28. Brenda Joyce (also contemporary, historical)

29. Sherrilyn Kenyon - 30 (Kinley MacGregor-also contemporary) 

30. Sherril King 

31. Sharon Lee and Steve Miller

32. Lora Leigh

33. Josie Litton

34. Dianna Love

35. Katie MacAlister - 3

36. Kinley MacGregor - 9 (Sherrilyn Kenyon-also Historical)

37. T. J. MacGregor - 2

38. Robin McKinley (YA)
39. Alice Hoffman

40. Karen Marie Moning - 7 (also historical)

41. Joy Nash

42. Constance O'Day Flannery (T/T and contemporary)

43. Robin D. Owens

44. Vickie Petterson 

45. Tamora Pierce (YA)

46. Robin Popp

47. Terry Pratchett

48. Laura Resnick

49. J. D. Robb - 9
50. J. K. Rowling

51. Savannah Russe 

52. Lynsay Sands - 6 (also historical)

53. John Scalzi 

54. Sharon Shinn

55. Gena Showalter (also contemporary)

56. Nalini Singh - 2 (also contemporary)

57. Susan Sizeman 

58. Kathryn Smith

59. Kerrelyn Sparks

60. Wen Spencer

61. Sunny

62. Shanna Swendson
63. J. R. R. Tolkien

64. Carrie Vaughn

65. Lynn Viehl

66. Shiloh Walker

67. J. R. Ward - 12

68. C. L. Wilson

69. Anna Windsor  - 2