Taste of Cinema's list description: All great films are personal. They stem directly from the filmmakers, meaning the writer or director. However, certain films come straight from the directors. They can't make up a story through a fantasy or a period piece, the only option is to use the cinematic language and expression to tell their point of view.
Of course, one can do this through specific doppelgängers, stand-ins for families, or name changes. Others root their childhood, past experiences, and artistic expression into dreams, harsh realism, or both. Whatever the case, maybe, there is a line that the director crosses over to tell their most personal stories in their most personal expression or craft, thus shaping their art to tell their stories.