Question: Kid Cudi and Jonathan Davis, are of which nationality?

full_context: Document 1: Kid Cudi discography: The discography of American recording artist Kid Cudi consists of six studio albums, one mixtape, 29 singles (including 15 as a featured artist), two promotional singles and 27 music videos. Aside from his solo career, Cudi is a member of WZRD, a rock band and production team he formed with longtime friend and collaborator, Dot da Genius. As of January 2016, Kid Cudi has sold a combined 10.5 million records according to Recording Industry Association of America (RIAA).
Document 2: Faget (song): "Faget" is a song by the American nu metal band Korn. It is the sixth track from the band's self-titled debut studio album. The song is about how Korn's lead vocalist Jonathan Davis was bullied in high school for being into arts, wearing eyeliner, being into new wave music (for example, Duran Duran), and wearing frilly shirts. According to Jonathan Davis, he was constantly called names such as "faggot". Also, there was a rumor that Davis was gay. Jonathan Davis said he did not know if he was gay or not. Therefore, Davis tried to get in a relationship with another boy. However, Jonathan Davis disliked the experience, realizing he is not gay, even if people thought he was.
Document 3: Indicud: Indicud is the third studio album by American hip hop recording artist Kid Cudi. The album was released on April 12, 2013, by Republic Records. It was the first album of Cudi's solo career to not be an installment of his "Man on the Moon" series. The album's cover artwork was designed by Kid Cudi himself, who also served as an executive producer of "Indicud". It was Cudi's goal to make more uptempo and positive music with the album. He described it as a completely new format compared to his previous albums.
Document 4: Kanye West: Kanye Omari West ( ; born June 8, 1977) is an American rapper, singer, songwriter, record producer, fashion designer, and entrepreneur. Born in Atlanta and raised in Chicago, West briefly attended art school before becoming known as a producer for Roc-A-Fella Records in the early 2000s, producing hit singles for artists such as Jay-Z and Alicia Keys. Intent on pursuing a solo career as a rapper, West released his debut album "The College Dropout" in 2004 to widespread critical and commercial success, and founded the record label GOOD Music. He went on to pursue a variety of styles on subsequent albums "Late Registration" (2005), "Graduation" (2007), and "808s & Heartbreak" (2008). In 2010, he released his fifth album "My Beautiful Dark Twisted Fantasy" to rave reviews from critics, and the following year he released the collaborative album "Watch the Throne" with Jay-Z. West released his abrasive sixth album, "Yeezus", to further critical praise in 2013. His seventh album, "The Life of Pablo", was released in 2016.
Document 5: A Kid Named Cudi: A Kid Named Cudi is the debut mixtape by American rapper Kid Cudi, released by New York City street wear brand 10.Deep, on July 17, 2008. The mixtape marked Cudi's first official release. Production was handled by Plain Pat and Emile; samples range from the likes of Outkast to Paul Simon and N.E.R.D to Band of Horses. The mixtape allowed a new progression of Kid Cudi with the release catching the eye of Kanye West, founder of GOOD Music. Cudi would ultimately be signed to GOOD Music later that year. Notably the album contains the song "Day 'n' Nite", Kid Cudi's commercial debut single, which reached number three on the US "Billboard" Hot 100 chart.
Document 6: Howard Jones (American musician): Howard Jones (born July 20, 1970) is an American metalcore vocalist, best known as vocalist of the bands Killswitch Engage and Blood Has Been Shed, and as the current vocalist of Light the Torch, formerly known as Devil You Know.
Document 7: Day 'n' Nite: "Day 'n' Nite" is a song by American hip hop recording artist Kid Cudi. The song was written and co-produced by Kid Cudi, alongside his longtime collaborator and friend, Brooklyn-based producer Dot da Genius. It was released as Cudi's commercial debut single on February 5, 2008, but had initially leaked online in December 2007, and was featured on several blogs in mid-November 2008.
Document 8: Travis Scott: Jacques Webster, Jr. (born April 30, 1992), better known by his stage name Travis Scott (formerly stylized as Travi$ Scott), is an American rapper, singer, songwriter and record producer from Houston, Texas. In 2012, Scott signed his first major-label deal with Epic Records. In November of the same year, Scott signed a deal with Kanye West's GOOD Music, to be a part of its production wing Very GOOD Beats, after appearing on the label's 2012 compilation album "Cruel Summer". In April 2013, it was announced Scott signed a record deal with T.I.'s Grand Hustle imprint. Scott's first full-length project, a mixtape titled "Owl Pharaoh", was self-released in May 2013. This was followed with a second mixtape, titled "Days Before Rodeo", in August 2014. Scott's debut studio album "Rodeo", was released in September 2015 and was led by the hit single "Antidote", which reached the top 20 of the US "Billboard" Hot 100 chart. His second album, "Birds in the Trap Sing McKnight", was released in September 2016, to generally positive reviews.
Document 9: List of songs recorded by Korn: Korn is an American alternative metal band from Bakersfield, California. Formed in 1993, the band originally featured vocalist Jonathan Davis, guitarists James "Munky" Shaffer and Brian "Head" Welch, bassist Reginald "Fieldy" Arvizu, and drummer David Silveria. The current lineup of the group includes drummer Ray Luzier, who replaced Silveria in 2009. The band released its self-titled debut album "Korn" in 1994, which was produced by Ross Robinson and featured equal songwriting credits for the whole band. "Life Is Peachy", released in 1996, included two cover versions – of Ice Cube's "Wicked" and War's "Lowrider", while the band's third album "Follow the Leader" featured collaborations with Limp Bizkit's Fred Durst ("All in the Family") and rappers Ice Cube ("Children of the Korn") and Slimkid3 ("Cameltosis").
Document 10: Lil Jon: Jonathan Smith (born January 17, 1971), better known by his stage name Lil Jon, is an American rapper, record producer, and DJ. He was the frontman of the group Lil Jon & The East Side Boyz, which he formed in 1997, and they released several albums until 2004.
Document 11: Mike Davis (guitarist): Mike Davis (born ca. 1970) is an American metal guitarist. He is best known for his work in the progressive death metal band Nocturnus. He joined the band around 1988, and eventually became the bands' standout lead guitarist. He joined the band when he was just 18 years old and is widely regarded as an underrated guitarist. After the second breakup of Nocturnus in 2003 he formed the band Tiwanaku with Emo Mowery and Richard Christy, but quit early on 
Document 12: Kid Cudi: Scott Ramon Seguro Mescudi (born January 30, 1984), better known by his stage name Kid Cudi ( , often stylized KiD CuDi), is an American recording artist and actor from Cleveland, Ohio. Cudi first gained major recognition following the release of his first official full-length project, a mixtape titled "A Kid Named Cudi" (2008). The mixtape caught the attention of American rapper-producer Kanye West, who subsequently signed Cudi to his GOOD Music label imprint in late 2008. Cudi has since gone on to launch his own record label imprints, the now-dissolved Dream On and current independent label, Wicked Awesome Records. Initially a rapper, Cudi has since added singer, songwriter, record producer, guitarist, music video director and film composer to his repertoire.
Document 13: Jonathan Davis: Jonathan Howsmon Davis (born January 18, 1971), also known as JD and JDevil (or J Devil), is an American musician best known as the leading vocalist and frontman of the nu metal band Korn.
Document 14: Kendrick Lamar: Kendrick Lamar Duckworth (born June 17, 1987) is an American rapper and songwriter. Born and raised in Compton, California, he embarked on his musical career as a teenager under the stage name K-Dot, releasing a mixtape that garnered local attention and led to his signing with indie record label Top Dawg Entertainment (TDE). He began to gain recognition in 2010, after his first retail release, "Overly Dedicated". The following year, Lamar independently released his first studio album, "Section.80", which included his debut single, "HiiiPoWeR". By that time, he had amassed a large Internet following and collaborated with several prominent artists in the hip hop industry, including The Game, Busta Rhymes, Lil Wayne and Snoop Dogg.
Document 15: Jonathan Davis and the SFA: Jonathan Davis and the SFA (Simply Fucking Amazings) is the solo band of Korn frontman Jonathan Davis.
ground_truth: American