The Goblin Emperor series, Katherine Addison;
(Old school) the Count St Germaine vampire series, Chelsea Quinn Yarbro;
The Incryptid series, Seanan McGuire;
The Paladin books, T. Kingfisher;
(Depends on where you divide SF from F, but it's both - it's got mermaids) Weird Fishes, Rae Mariz
