A3: All the HARLEQUIN (& ish) (sets & series - M thru Z) I've found  (Set: 4 0f 4)

(The Montanari Marriages #1) ONE-SHOT

(The Montanari Marriages Book 2) ONE-SHOT

(The Nanny Handbook #1)

[Needed: World's Most Elgible Bachelors #1]

[Needed: World's Most Elgible Bachelors #2]

[Needed: World's Most Elgible Bachelors #3]

[Newlywed Games #1] (3*) - One poorly chosen word is all he needs to call off the wedding, leaving her to deal with the pain of her miscarriage alone. Now years later, they meet again at a wedding venue. Can they communicate a little more clearly this time?

(Notting Hill Grooms 1) ONE-SHOT

[Orchard Valley Trilogy #1] One-shot [3*] - When her father had a heart attack, the business-focused CEO rushes to his side and discovers an immediate mutual attraction with the handsome, focused doctor caring for him. Neither has any intention of giving up their career for the other, nor has the other asked, but can they really give up each other? A story where the relationship grows the old fashion way... with clothes on.

(Park Avenue Scandal #1)