I love Elizabeth Hunter's Elemental Mystery series. She invented a unique and brilliant vampire mythology, and it absolutely works!

The Psy-Changeling series excellent, sexy, and is full of fantastic world-building.

The Kingmaker Chronicles feature a kick-ass heroine and a hero who matches her sword-for-sword. A wonderful series!

Mercy Thompson is a native American car mechanic shapeshifter who lives next door to a werewolf pack. Full of alphas and strong women.

The Fever series is set in a Dublin full of Fae and demons, with a human woman who discovers her ferocity in the face of the supernatural.

The entire series is brilliant, but I've re-read Outlander once every three years for the past twenty-five years.