A biographer can be considered as a person who writes life stories. Biographers research and document the lives of real people, whether they are famous historical figures, celebrities, or ordinary individuals with remarkable stories.
They need good research skills. Since they are writing about someone's life, they have to gather accurate information from various sources like interviews, archives, and old records.
Well, the usual name for someone who writes stories is an 'author'. Authors come up with all kinds of tales and share them with the world through their writing.
Authors can be considered as such. They use their creativity and language skills to craft books or stories, like J.K. Rowling who wrote the 'Harry Potter' series.
They are usually very imaginative. They can create entire worlds in their minds and then put them down on paper. For example, Tolkien created Middle - earth for his 'Lord of the Rings' series.