The Steele Dossier is a complex document. It has elements that are likely fiction. Some of the claims in it have not been verified and were used in a politically charged environment. So, in my view, it's more on the side of fiction.
Well, as far as I know, there's no definite proof that Christopher Steele was writing fiction. Maybe more information is needed to make a conclusive determination.
Definitely fiction. Downton Abbey creates a fictional world with made-up characters and events, although it may draw inspiration from historical periods and social contexts.
Danielle Steele novels often feature strong female characters. They usually deal with themes like love, family, and relationships. The stories are set in various settings, from big cities to small towns.