The film 'I Am Greta' is a documentary centered on climate activist Greta Thunberg and her global efforts. It does not feature any identifiable LGBTQ+ characters or themes, thus there is no portrayal to evaluate within its narrative scope.

Based on the film's title, director, starring cast, and general knowledge of its subject matter as a documentary about Greta Thunberg, there is no indication of any transsexual characters or themes being present. Therefore, the film receives an N/A rating for its portrayal.

The movie does not contain any action or adventure elements.

This documentary portrays real historical figures, Greta Thunberg, Svante Thunberg, and Niclas Svenningsen, as their actual documented genders. There are no instances of characters established as one gender being portrayed as another.

This film is a documentary featuring real historical figures Greta Thunberg, Svante Thunberg, and Niclas Svenningsen portraying themselves. Their on-screen portrayal matches their documented real-world race, thus no race swap occurs.