My favorites of all these...(excluding the "classical")

• Robert Williams
  • Mind-bending 'low brow' cacophonies of color & style.
• Brom
  • Subversive
• Dave McKean
• Ian Miller
• Toshio Saeki
  • Koji Morimoto
  • Shunga (ancient Japanese erotica) in vivid color.
  • Kinky in keeping with shunga tradition--taken, however, to a modern extreme & incorporated with elements of horror. Perhaps not for the faint of heart...or church-going crowd (faint of heart or not).
• Woo-Jin OH
• Aya Kato
• Tim Sale
  • You know--Batman. Catwoman. Black and white. High contrast, comic style. Delicious inky smoothness.
• Wayne Barlowe
  • Star Wars on an acid trip, thick, shadowy oils with vibrant bursts of blood red and white.
• Shaun Tan
• Yoshitaka Amano
  • Delicate, etherial watercolor.
• Zdzislaw Beksinski
  • Akin to a darker-themed Waterhouse.
• Mead Schaeffer
  • If Waterhouse illustrated Hitchcock films.
• Mu Pan
• Tomer Hanuka
• JÖRN KASPUHL
• Ilene Meyer
• Edmund Dulac
• Lebbeus Woods - parasitic architecture
• Gerhard Richter

(fairly or very) Contemporary

• Vania Zouravliov
• Alberto Cerriteno
• Mia
• Bobby Chiu ...also here
• Bruno Mota
• Christian Alzmann
• Christina Ung
• David Foldvari
• Ashley Wood
• Taylor Fischer
• Daijiro Ohara
• Danil Shunkov
• Hayao Miyazaki
• "Scary Girl"
• Joanna Gorska & Jerzy Skakun
• Leong Wan Kok & pH Khor
• Leendert Masselink
• "HumanNature84"
• Wilson Becerra
• Gagatka
• Lois van Baarle
• Yipori
• Jacek Yerka
• Jaixm
• James Jean
• Jason Chan
• Jonny Duddle
• Joshua Middleton
• Kent Williams
• Keith Thompson
• Koji Morimoto
• Leo & Diane Dillon
• Maki Murakami
  • She has a great knack for conveying character, which might be difficult to pick up on unless you get involved in her graphic novels, such as Gravitation.
• Rory Doona
• Ruan Jia
• Sonny Liew
• Sylvia Ji
• Thomas Allen
• Xiaoqing Ding
• Zutto
• Will Barras
• Michael Hall
• Andrew Hem
• Esao Andrews
• Hans Hemmert
• Jeremy Forson
• Jonatan Cantero
• Julian Calos
• Nimit Malavia
• Daniel Park
• Thomas Doyle
• Michael Page
• Tessar Lo
• Alexander Day
• Raul Allen
• Bill Sienkiewycz
• Marcus Jansen
• Matthew Woodson
• Andrzej Dragan Photography.
• Randy Pijoan
• Sandy Skoglund
• Diane Arbus
• Keith Louitit
• Debbie Evans (stunt driver for Matrix Reloaded, Fast & Furious, Mission Impossible II)
• Bob Anderson (sword fight choreographer in The Princess Bride, LOTR, Barry Lydon, Mask of Zorro, James Bond and Pirates of the Caribbean. Also Darth Vader in costume.)

"Classical"

• Gian Lorenzo Bernini
• Gustav Klimt
• Waterhouse
• Tampieri
• Theodor Kittelsen