Who was a member of more bands, Jesse Leach or Lindsey Buckingham?
Jesse David Leach
Title: Sinai 48
Passage: Sinai 48 is an American band formed in 2006 consisting of Alex Helene (vocals), Ananiah McCarrell (guitars and synthesizers), Gary "Hoppy" Hodges (drums and percussion), and Tom Moncrieff (bass and digital editing).  The latter two were formerly members of the band Buckingham Nicks with Lindsey Buckingham and Stevie Nicks.  Sinai 48 is the first reunion of the other band members since Buckingham and Nicks joined Fleetwood Mac.
Title: Jesse Leach
Passage: Jesse David Leach (born July 3, 1978) is an American musician from Providence, Rhode Island, and is the lead vocalist of the metalcore band Killswitch Engage.  He also fronts the stoner rock/heavy metal band Seemless, as well as handling vocal duties for the hardcore metal bands The Empire Shall Fall and Times of Grace.  In February 2012 he rejoined Killswitch Engage following the departure of vocalist Howard Jones in January 2012.  He currently resides in Brooklyn, NY with his wife, Melissa.
Title: Lindsey Buckingham
Passage: Lindsey Adams Buckingham (born October 3, 1949) is an American musician, singer, songwriter, and producer, best known as lead guitarist and one of the vocalists of the musical group Fleetwood Mac from 1975 to 1987, and then 1997 to the present day.  Aside from his tenure with Fleetwood Mac, Buckingham has also released six solo albums and three live albums.  As a member of Fleetwood Mac, he was inducted into the Rock and Roll Hall of Fame in 1998.  In 2011, Buckingham was ranked 100th in Rolling Stone Magazine's 2011 list of "The 100 Greatest Guitarists of All Time".  Buckingham is known for his fingerpicking guitar style.
Lindsey Buckingham Jesse Leach