Harlequin Manga # 2 Revised

The Royal House of Cacciatore Series
1 The Mediterranean Princes's Passion (not on mangago)
2 The Prince's Love-Child
3 The Future King's Bride (not on mangago)

Desert Kings Series
1 The Sheikh's Chosen Queen (not on mangago)
2 King of the Desert, Captive Bride (on mangago)

The Gypsy Inheritance Series (the original novel has three books but I only found two manga was made from this series so far)
1 Seduction By The Book (not made into manga)
2 Reflected Pleasures (not on mangago)
3 A Scandalous Melody (on mangago)

The 21st Century Gentleman's Club Series
1 The Ultimate Playboy (not on mangago)
2 The Ultimate Seduction
3 The Ultimate Revenge (not on mangago)

Notting Hill Grooms Series (this series has got to be the most confusing so all three have different authors and all of them have been made into a manga by different artists)
1 Irresistible Temptation (on mangago)
2 Reform of the Playboy (not on mangago)
3 The Millionaire Affair (not on mangago)

Newlywed Games Series
1 From Ex to Eternity (on mangago)
2 From Fake to Forever (not on mangago)

Royal Rebels Series
1 The Prince's Pregnant Bride (not on mangago)
2 At His Majesty's Convenience (on mangago)
3 Claiming His Royal Heir (not on mangago)

With These Rings Series
1 The Secret Millionaire (not on mangago)
2 The Man, the Ring, the Wedding (on mangago)
3 Her Surprise Family (not on mangago)

Lollipop Series ( not the official name of the series but all three girls where in the same band and you can see the cameo in each one..... i think this is the right order)
1 Back in the Headlines (not on mangago)
2 A Scandal, A Secret, A Baby (on mangago)
3 The Greek's Marriage Bargain (not on mangago)

Billion-Dollar Braddocks Series/ Kekkon Kirai no Sankyoudai/ Three-Marriage hating Brothers
1 The C.E.O.'s Unplanned Proposal (not on mangago)
2 The Playboy's Office Romance (not on mangago)
3 The Blacksheep's Arranged Marriage/ Lady e no Kaidan (on mangago)