Question: Jon Spencer Blues Explosion and SWMRS, share which musical genre?

Context paragraphs:
Heavy Trash: Heavy Trash is an American rockabilly band based in New York City, formed by Jon Spencer of The Jon Spencer Blues Explosion and Matt Verta-Ray (formerly of New York bands Madder Rose and Speedball Baby).  The band's music draws from an eclectic mix of genres, including rock & roll, rockabilly, blues, alternative country, and garage rock or garage punk.  They are currently signed to Yep Roc Records, Bronzerat Records and Crunchy Frog Records.

Brassy (band): Brassy were an English rock/hip hop band, formed in 1994 in Manchester by American singer Muffin Spencer, younger sister of Jon Spencer (of Jon Spencer Blues Explosion).  The band split up in 2003 after releasing 2 studio albums.

Jon Spencer Blues Explosion: The Jon Spencer Blues Explosion is an American alternative rock trio, formed in 1991 and based in New York City, New York.  The band consists of Judah Bauer on guitar, backing vocals, harmonica and occasional lead vocals, Russell Simins on drums and Jon Spencer on vocals, guitar and theremin.  Their musical style is largely rooted in rock and roll although it draws influences from punk, blues, garage, rockabilly, soul, noise rock, rhythm and blues and hip hop.  They have released nine official studio albums, collaborative records with Dub Narcotic Sound System and R.L. Burnside as well as numerous live, singles, out-take albums, compilations, remix albums and, in 2010, a series of expanded reissues.

Plastic Fang: Plastic Fang is the seventh official release by the American punk blues group The Jon Spencer Blues Explosion, released on Matador in 2002.  "She Said" was released as a single and a music video was filmed for it.  In the video, Jon Spencer is a vampire being hunted by nuns whom he eventually seduces into a striptease en masse, before fighting and dying at the hands of a vampiress.

A Reverse Willie Horton: A Reverse Willie Horton is either the debut album, or an early bootleg album, by the New York City-based Jon Spencer Blues Explosion.  Few (500) copies of the album were produced; however, some songs are featured on the group's next two albums, 1992's The Jon Spencer Blues Explosion and 1993's Crypt Style, albeit in a different mix or recording altogether.  However, sound of the recording is closer to the Crypt Style LP.  All three albums are made up of tracks recorded in 1991 by producer/engineer Kramer and Steve Albini (in separate sessions).

Damage (Blues Explosion album): Damage is the eighth studio album by American punk blues band Blues Explosion, released in 2004.  This is the first album that the band has released under the abbreviated name "Blues Explosion" rather than their previous name, "The Jon Spencer Blues Explosion".  Spencer said about the band name change:

SWMRS: SWMRS (formerly Emily's Army) is an American punk rock band formed in Oakland, California in 2004 by Cole Becker and Joey Armstrong, with Cole's brother Max joining only a few weeks afterwards.  They drew on a mix of influences ranging from the Beach Boys to the Ramones to create their own brand of rock.  The band added Travis Neumann in 2009, who later left in 2014 due to creative differences.  The band released a demo and a string of EPs from 2008 to 2010.  The band released their first album, "Don't Be a Dick", on June 14, 2011.  The band's second album, "Lost at Seventeen", was released on June 11, 2013.  They added Sebastian Mueller as the bassist 2014.  The band's third studio album, and their first under the name SWMRS after dropping their former name, "Drive North", was released February 12, 2016, via Uncool Records. " Drive North" was later re-released and remastered after the band was signed to record label Fueled By Ramen on October 13, 2016.

Jon Spencer: Jon Spencer (born 1965) is an American singer, composer and guitarist.  He has been involved in multiple musical acts, such as Pussy Galore, Boss Hog, Heavy Trash and The Jon Spencer Blues Explosion.

Butter 08: Butter 08 was a short-lived musical side-project whose members consisted of Yuka Honda and Miho Hatori of Cibo Matto, Russell Simins of the Jon Spencer Blues Explosion, Rick Lee of Skeleton Key and director Mike Mills.  The band released just one album, the self-titled "Butter 08" in 1996 on Beastie Boys' now defunct Grand Royal record label.  The album features guest performances by future Cibo Matto members Timo Ellis and Sean Lennon as well as a performance by filmmaker Evan Bernard who directed music videos for several Grand Royal artists as well as for Cibo Matto and the Jon Spencer Blues Explosion.

Now I Got Worry: Now I Got Worry is a 1996 studio album by the American punk blues band The Jon Spencer Blues Explosion.  The album opens up with Spencer screaming.  "Fuck Shit Up" is a cover of a Dub Narcotic song.  The man depicted on the cover is Jon Spencer.  "Wail" became a brief hit for the band and its music video was directed by "Weird Al" Yankovic.

Supporting paragraphs: Jon Spencer Blues Explosion SWMRS
Answer: rock