Dark fantasy is my beloved genre, and most, if not all, of my projects revolve around horror and grotesque, so I don't think they'll be your cup of tea haha. Still, thank you for giving FMO a try. :D
(It depends on the character and their role in the story. Sometimes their name has a specific purpose/meaning, like Malitiose's here. Other times, I just find a name or a word I like, and it resonates with the image of the character that I have in mind. For more 'modern' projects, I like to use names from my list. I like to write down all names and surnames I come across that I like, then I pick and choose what fits best for a specific character.)