Question: Who has been a member of more bands, Caleb Shomo or John Rzeznik?
Context: John Joseph Theodore Rzeznik ( ; born December 5, 1965) is an American musician, singer-songwriter, and producer.  He is best known as the guitarist and frontman of the rock band the Goo Goo Dolls, of which he is a founding member and with whom he has recorded eleven studio albums. "On the Way Down" is the debut single by Ryan Cabrera, released from his 2004 studio album, "Take It All Away".  The song won a 2006 ASCAP Pop Award for most performed song of that year.  The song was co-written with Curtis Frasca and Sabelle Breer who also helped create hit songs for Stacie Orrico and Avril Lavigne.  It reached number one on airplay charts and peaked at number 15 on the "Billboard" Hot 100 on October 5, 2004.  Backup vocals on this track are done by John Rzeznik member of The Goo Goo Dolls. This Means War is the third and final studio album by American metalcore band Attack Attack! .  It was released on January 17, 2012 through Rise Records.  Initially scheduled to be produced by John Feldmann (who previously produced tracks for the band's reissue of their self-titled album), production was instead handled by frontman Caleb Shomo in his home studio, making it the band's first album not to be produced by Joey Sturgis. Sick is the debut extended play by American hardcore punk band Beartooth and is produced by Caleb Shomo formerly of the band Attack Attack!  who sang and recorded all the instruments used on the album.  It was released on July 26, 2013 through Red Bull Records for free download. Something for the Rest of Us is the ninth studio album by American rock band Goo Goo Dolls.  It was released on August 28, 2010 in Australia and on August 31 in North America through Warner Bros.  Records.  The recording process took place during the spring to fall of 2009 in the GCR Audio studio in Buffalo and Paramount Studios as well as "the Ark" in Los Angeles, with producer Tim Palmer.  A single had been originally slated to be released in November 2009 with an album release in February 2010, but the band went back into the studio in January 2010.  According to lead singer and guitarist John Rzeznik, this was done to make further improvements on what they had previously thought had been a finished record.  Several producers were brought in to assist on the production process, including Butch Vig, John Fields, Paul David Hager and Rob Cavallo.  "Something for the Rest of Us" is the third Goo Goo Dolls studio album that Cavallo has produced ("Dizzy Up the Girl" and "Gutterflower").  When asked about the length of time between albums, Rzeznik admitted it was a mix of songwriting issues as well as taking time out for personal reasons; "I wanted to really dig deep and there are a million songs I threw away, like, “Nah, it's not good enough.  I wanna do something different.  I wanna do something better, go deeper.  I also wanted to have a life with my girlfriend for a while.  I owed it to her to spend some time with her and be normal and be in one place.  That was kind of important."  In one of the Ustream sessions, Robby revealed that the album would have twelve songs and "Real" is not among them.  In late May, John announced that "Home" would be the first single and was released onto radio and iTunes stores on June 8, 2010. The Goo Goo Dolls are an American rock band formed in 1985 in Buffalo, New York, by vocalist and guitarist John Rzeznik, vocalist and bassist Robby Takac, and drummer George Tutuska.  Mike Malinin was the band's drummer from January 1995 until December 27, 2013 (but not made an official member until 1998).  Although renowned for their commercially successful 1998 single "Iris", they have had several other notable and popular singles including "Name" and "Naked" from 1995's "A Boy Named Goo". " Slide", "Black Balloon", "Dizzy", and "Broadway" from 1998's "Dizzy Up the Girl", "Here Is Gone" from 2002's "Gutterflower", "Better Days", "Give a Little Bit", and "Stay with You" from 2006's "Let Love In" (although "Give A Little Bit" was originally released on the 2004 live CD/DVD album ""), and "Home" from 2010's "Something for the Rest of Us".  The Goo Goo Dolls have had 19 top ten singles on various charts, and have sold more than 12 million albums worldwide. Beartooth is an American hardcore punk band formed by Caleb Shomo in Columbus, Ohio in 2012.  They have been signed to Red Bull Records since 2013.  Their debut EP "Sick" was released on July 26, 2013, followed by their debut full-length album "Disgusting" on June 10, 2014.  Their sophomore album "Aggressive" was released on June 3, 2016. Jed is the second studio album by American rock band Goo Goo Dolls.  It is the first studio album in which John Rzeznik sang vocals for some of the tracks.  The majority of the songs are sung by Robby Takac, with Rzeznik taking over for two ("Up Yours" and "James Dean").  Fellow Western New York native Lance Diamond sings vocals on track seven, "Down On The Corner."  The second track on the album, "Up Yours", was the only song from "Jed" found on the band's compilation album "What I Learned About Ego, Opinion, Art & Commerce".  The song "No Way Out" was also included on the band's most recent compilation album "Volume Two", which consisted of other album tracks, b-sides and rarities.  The album was re-released on CD on February 22, 1994. Caleb Joshua Shomo (born December 1, 1992) is the lead vocalist of hardcore band Beartooth, the former lead vocalist, guitarist, keyboardist, and early on backing vocalist of metalcore band Attack Attack! , and the owner of Studio Records in Columbus, Ohio.  Shomo joined Attack Attack!  as keyboardist at 14 years old while maintaining a passion for electronic music and eventually grew into record production by 18. "I'm Still Here (Jim's Theme)" is a song written by the Goo Goo Dolls frontman John Rzeznik for Disney's animated film "Treasure Planet".  The song is in the key of A Major and was released by Rzeznik as a single away from The Goo Goo Dolls.  It was a moderately successful pop hit.
Answer: Caleb Joshua Shomo