Question: Otaku Unite! and Moana, are of which genre?

Context articles: Trenton and Free Radical
Robert Lee Eskridge
Robert J. Flaherty
Otaku Unite!
Piʻilani
Moana (1926 film)
Denpa song
Posi music
National Black Theatre Festival

" Free Radical delivers honest beats—although there are diverse influences, including hip-hop and electro, the result is sufficiently distinctive and edgy to evoke a sense of being unique, avoiding tired genre labels.
 Theirs is a contemporary African sound with universal appeal, and the muscle to unite divergent tastes.
 It's revolutionary music geared to ignite dance-floors while exploding our thinking ".
 Keith Bain
Robert Lee Eskridge (November 22, 1891 – 1975) was an American genre painter, muralist and illustrator.
 He was born in Philipsburg, Pennsylvania.
 Eskridge moved with his family to Pasadena as a child.
 He studied at the University of Southern California, Los Angeles College of Fine Arts, the Art Institute of Chicago, the Chicago Academy of Fine Arts and with George Senseney and André Lhote in Paris.
 After traveling extensively in Spain and the South Seas, he lived in Chicago, New York, and Coronado Beach, CA (1917–32).
 He moved to Honolulu in 1932 and taught at the University of Hawaii.
 During the Great Depression he was a Works Progress Administration muralist.
 His murals are in the Ala Moana Park Sports Pavilion in Honolulu and at Palmer House in Chicago.
Robert Joseph Flaherty, FRGS ( ; February 16, 1884 – July 23, 1951) was an American filmmaker who directed and produced the first commercially successful feature-length documentary film, "Nanook of the North" (1922).
 The film made his reputation and nothing in his later life fully equaled its success, although he continued the development of this new genre of narrative documentary, e.g. with "Moana" (1926), set in the South Seas, and "Man of Aran" (1934), filmed in Ireland's Aran Islands.
 He is considered the "father" of both the documentary and the ethnographic film.
Otaku Unite!
 is a 2004 documentary film by Eric Bresler on American fans of Japanese culture, specifically anime and manga, known as Otaku.
Piʻilani ("ascent to heaven") (born ca. 1577) ruled as the 15th Mōʻī of the island of Maui, as an independent kingdom within the islands of Hawaii in the later part of the 16th century.
 He is the first ruling "Alii" to unite the island under a single line.
 His rule was peaceful for most of his reign.
 His father was Kawaokaohele and his mother was Kepalaoa.
 Pilʻilani and his offspring are important in legends of Maui, in the same way as Liloa and his son ʻUmi-a-Liloa in the legends of the island of Hawaii.
 The two family lines of Piʻilani and Liloa were closely associated although from separate islands.
 ʻUmi was a supporter of Kiha-a-Piilani, Piʻilani's son, when he went to war.
 The lineage would continue in west Hawaii and east Maui in lesser lines and would be seen in the lines of Moana "Kane" from Liloa and Piʻilaniwahine from Piʻilani in the couples marriage and offspring.
Moana (] ) is a 1926 American documentary film, or more strictly a work of "docufiction" that was directed by Robert J. Flaherty, the creator of "Nanook of the North" (1922).
Denpa song (電波ソング ) is a type of Japanese music that is intentionally strange and catchy.
 Common features of denpa songs include intentionally off-key vocals, nonsensical lyrics and an over-the-top tune.
 Denpa music has grown into a subculture within Japan, forming a significant aspect of otaku culture and has large numbers of doujin circles and music artists dedicated to denpa music.
 Denpa is not a specific genre in itself, but rather an umbrella term for various kinds of music.
Posi music (pronounced pah-zee) has been around since the 1940s, though only recently has a definitive label been applied to music in this genre.
 Short for positive music, posi music is categorized by its intention to have a positive effect on the listener.
 Musicians who write and perform posi music profess a desire for their music to unite and inspire their audience and make them feel better.
The National Black Theatre Festival (NBTF) was founded in 1989 by Larry Leon Hamlin in Winston-Salem, North Carolina.
 Serving as its executive director, Hamlin’s goal in creating the Festival was "to unite black theatre companies in America to ensure the survival of the genre into the next millennium".
 Held biennially since 1989 for six days, the NBTF showcases the best in African-American theater.