From here.

• private island
• cabin
• fake engagement
• paparazzi
• white horse proposal
• dead body-sheriff
• kidnapped by sheik
• castle-lord
• inherited ranch/loyal worker
• long lost daughter of wealthy parents
• he's childhood badboy from wrong side tracks and she always stood up for him
• arranged marriage
• marriage in name only to satisfy dying gram
• impending marriage to save business or gain custody of child
• nurse/patient or elderly parent or doctor
• secret baby
• twin sister
• billionaire
• secretary/boss
• childhood crush of older brother's best friend/little sister grew up
• amnesia
• forbidden semi-family member (mom's 3rd husband's son or something)
• bodyguard
• 2nd chance with ex - esp due to misunderstanding
• best friend of widow's husband
• can't be with him because she thinks she's dying
• kindergarten teacher/single dad
• plain girl/rogue
• cosmo girl/geek
• friends to lovers
• cinderella--- evil ex of hero
• thought she was a ho but she’s a virgin
• enemies-sparks fly
• alien abduction
• bed and breakfast heroine
• plucky reporter
• hot rockstar
• tycoon
• warring neighbors
• wild child who makes good and comes back to hometown
• heroine who overcomes her traumatic background with help of strong steady hero
• jealous Latin lover
• heroine being stalked and hero cop/FBI agent/sheriff
• virgin widow
• heroine breaks down in a deserted area
• housekeeper
• pregnant widow
• family enemy
• brooding hero with secret history
• kidnapped by pirate
• unisex names that lead to an amusing misunderstanding

AND

• betrayal
• business competitors
• family feud
• kidnapping
• masquerade - hero, heroine or both pretend to be someone else
• secret - keeps a dark secret
• stranded
• twins
• the bet
• long lost lovers
• star-crossed lovers
• disapproving authority figure
• secret crush
• nanny to wife
• reformed rake
• plain Jane without makeover
• one character has emotional issues to overcome
• accidental pregnancy
• across the tracks/wrong side of the tracks
• baby on the doorstep
• bad girl/rich boy
• bait and switch (wrong bed/masquerade)
• blackmail
• boss/employee
• cowboy
• fake engagement
• fling
• matchmaker
• mistaken identity
• older brother's best friend
• political scandal
• right under your nose
• road romance
• royalty
• secret baby
• sheik
• war widow