Question: Which artist recorded more tracks, Mark Rankin or Steve Lukather?

Context paragraphs:
Lukather: Lukather is the first solo album from Toto guitarist Steve Lukather released in 1989.

Transition (Steve Lukather album): Transition is the seventh studio album by Steve Lukather, released on vinyl and as a jewel case CD on January 21, 2013 by Mascot Records.  In Europe a limited edition Digibook was also released, containing a booklet with studio pictures and liner notes from Lukather and producer C. J. Vanston.

No Substitutions: Live in Osaka: No Substitutions: Live in Osaka is a live album by Larry Carlton and Steve Lukather, released in 2001 through Favored Nations.  In 2002, the album won Carlton and Lukather, along with engineer/recorder Yoshiyasu Kumada and editor/producer Steve Vai, the Grammy Award for Best Pop Instrumental Album.

Steve Lukather: Steven Lee Lukather (born October 21, 1957) is an American guitarist, singer, songwriter, arranger and record producer, best known for his work with the rock band Toto.  A prolific session musician, Lukather has recorded guitar tracks for more than 1,500 albums representing a broad array of artists and genres.  He has also contributed to albums and hit singles as a songwriter, arranger and producer.  Lukather has released seven solo albums, the latest of which, "Transition", was released in January 2013.

Tommy Bolin and Friends: Great Gypsy Soul: Tommy Bolin and Friends: Great Gypsy Soul, often referred to as simply Great Gypsy Soul, is a double tribute album to former Deep Purple guitarist Tommy Bolin.  Released on March 26, 2012, the album contains newly recorded music from original outtakes and alternative versions, with several modern musicians and singers performing singing on top of the original multi-tracks along with Bolin and his band.  All tracks contain Bolin's original guitar work and vocals.  Additional performers include Joe Bonamassa, Nels Cline, Peter Frampton, Warren Haynes, Glenn Hughes, Myles Kennedy, Sonny Landreth, Steve Lukather, Steve Morse, Oz Noy, Prairie Prince, John Scofield, Big Sugar, Derek Trucks and Brad Whitford.

Mark Rankin: Mark Rankin was lead vocalist with Scottish rock band Gun, who were best known for their cover of "Word Up! ", originally by Cameo.  The single was taken from the album "Swagger", and was released in 1994.  Other singles were "Better Days", "Taking on the World" and "Steal Your Fire".

All's Well That Ends Well (Steve Lukather album): All's Well That Ends Well is the sixth studio album by Steve Lukather, released on vinyl and as a jewel case CD on October 11, 2010 by Mascot Records.  In Europe a limited edition Digibook was also released, containing a booklet with studio pictures and liner notes from Lukather and producer CJ Vanston, as well as a personal message from Lukather.  The album is dedicated to his late mother Kathy.

Luke (album): Luke is the third solo album by Steve Lukather released in 1997.  It was a much different and more introspective album than Lukather's previous two solo efforts.  The album is a concentrated collection of many of Lukather's musical influences, and he deliberately let those influences come out on the album.  "Luke" is an experimental album, and like "Candyman" it was recorded mostly in live sessions with minimal overdubbing and processing afterward.  "Luke" also features instrumentation not heard on previous Lukather albums such as pedal steel, harmonicas, Mellotrons, and experimental guitar, bass, and drum sounds.

Candyman (album): Candyman is the second solo album from Steve Lukather.  It was a collaboration of musicians who were for the most part also in Lukather's band Los Lobotomys.  Toto familiars Simon Phillips and David Paich participated as well as David Garfield, John Pêna, Chris Trujillo, Lenny Castro, Larry Klimas, Fee Waybill, Richard Page and Paul Rodgers.  Lukather recorded the album in mostly live takes with little overdubbing.

Ever Changing Times: Ever Changing Times is the fifth solo album of Steve Lukather.  It was his first album since leaving Toto.  In March 2008, a site was launched in order to promote the album.  According to Lukather, the album shows a lot of his influences and music he likes.

Supporting paragraphs: Mark Rankin Steve Lukather
Answer: Steven Lee Lukather