Question: Between Jonas Renkse and Brian Welch, who worked more diverse roles?

Context articles: Paradise Lost (band)
Discouraged Ones
Jonas Renkse
Brian Welch
October Tide
Katatonia
Rain Without End
Bloodbath
The Fall of Hearts
Grey Dawn (album)

Paradise Lost are a gothic metal band that formed in 1988 in Halifax, England and are considered by some to be one of the pioneers of the death-doom genre and of the gothic metal genre.
 Paradise Lost has proven to be an influential band, with Jonas Renkse of Katatonia saying that his band started off "as Paradise Lost fanboys".
Discouraged Ones (stylized discøuraged ønes) is the third full-length album by Katatonia.
 The album was released on April 27, 1998.
 This is the last Katatonia release with Mikael Oretoft.
 It is also their last release with Jonas Renkse on drums; on future releases, he would focus on being the band's lead vocalist and contributing additional guitar work.
 According to Renkse, "Discouraged Ones" had sold roughly 20,000 copies as of 2001.
Jonas Petter Renkse (born 19 May 1975) is a founding member, songwriter, lead vocalist (1991–1994, 1997-) and ex-drummer (1991–1994, 1996–1998) of the band Katatonia, founding member, songwriter, bassist, backing vocalist, ex-guitarist (2004) of the band Bloodbath.
Brian Philip Welch (born June 19, 1970), better known by the stage name Head, is an American musician, singer and songwriter best known as one of the guitarists and co-founder of the nu metal band Korn and his solo project Love and Death.
 Along with fellow Korn guitarist James "Munky" Shaffer, Welch helped develop Korn's distinctive sound, a mix of sirenlike shards of dissonant guitar that mimicked a turntablist's various effects and rumbling down-tuned riffing, that defined the nu metal aesthetic beginning in the mid-'90s.
October Tide is a death/doom metal side project that was created in 1995 by Katatonia vocalist Jonas Renkse and then-Katatonia guitarist Fred Norrman.
Katatonia is a Swedish metal band formed in Stockholm in 1991 by Jonas Renkse and Anders Nyström.
 The band started as a studio-only project for the duo, as an outlet for the band's love of death metal.
 Increasing popularity lead them to add more band members for live performances, though outside of the band's founders, the lineup was constantly changing, revolving door of musicians throughout the 1990s, notably including Mikael Åkerfeldt of the band Opeth for a period.
 After two death/doom albums, "Dance of December Souls" (1993) and "Brave Murder Day" (1996), problems with Renkse's vocal cords coupled with new musical influences lead the band away from the screamed vocals of death metal to a more traditional, melodic form of heavy metal music.
 The band released two more albums, "Discouraged Ones" (1998) and "Tonight's Decision" (1999), before settling into a stable quintet lineup for all of 2000's.
 The band released four more albums with said lineup - "Last Fair Deal Gone Down" (2001), "Viva Emptiness" (2003), "The Great Cold Distance" (2006), and "Night Is the New Day" (2009), with the band slowly moving away from their metal sound while adding more progressive rock sounds to their work over time.
 While lineup changes started up again into the 2010s, Renkse and Nyström persisted, and the band continued to release music, including "Dead End Kings" (2012) and their most recent, their tenth studio album, "The Fall of Hearts", released on May 20, 2016.
Rain Without End is the first album by death/doom metal band October Tide.
 This is the only October Tide release with Jonas Renkse on vocals.
 The album was reissued on 10 November 2008.
Bloodbath is a Swedish death metal supergroup from Stockholm, formed in 1998.
 The band has released four full-length albums, two EPs and two DVDs depicting their performances at Wacken Open Air (in 2005) and Bloodstock Open Air (in 2010).
 The group comprises Martin Axenrot (Opeth), Anders Nyström (Katatonia), Jonas Renkse (Katatonia), Nick Holmes (Paradise Lost), and Per Eriksson, who was previously the guitar technician for both Bloodbath and Katatonia.
The Fall of Hearts is the tenth studio album by Swedish metal band Katatonia.
 It was released on May 20, 2016.
 The album, mostly written and produced by founding members Jonas Renkse and Anders Nyström, was the first to also feature new members Daniel Moilanen and Roger Öjersson.
 The album moved in a more progressive rock direction than prior albums, and was generally well received by critics.
 Two singles were released in promotion of the album, "Old Heart Falls", and "Serein".
Grey Dawn was the second full release of death/doom metal band October Tide.
 This is the only October Tide release with Mårten Hansen in the band, and the last with Jonas Renkse.
 The album was reissued on 23 November 1999.