Narrative styles you should consider if you want something unusual
Written medias
Using the second person "you" instead of third person or first person narration. This style is better used when focusing on a single person or a small group. It can be impersonal or it can be someone specific referring to the protagonist(s)
Stream of consciousness (this is heavily focus on one or few pov only)
Exchanging letters (epistolar)
Story narrated in a personal diary or memoir
The story is told through poems / one epic poem
Visual medias
It's like a stream of consciousness where you see other people but they don't talk. Everything is a recalling of the protagonist, and it comes as a memory.
The protagonist (or more than one) sometimes breaks the fourth wall to narrate things to the audience
Podcasts/ audio medias
Story told through voicemail
Story learn only through phone calls
Story narrated through personal diary
All the medias
Different point of views for every chapter / section / episode
The story is learn through people chatting with each others in different times (maybe same place)
The story is told through a person/ group of person that narrate the events to others/record them
The point(s) of view isn't the one of the protagonist but of someone describing/trying to know them. You get to know the story by other people's thoughts, memories and interpretations