That’s quite a list you have there.
If you like Zdzislaw Beksinski you might also like:
Jacek Yerka
http://images.google.com/images?client=safari&rls=en&q=jacek+yerka&oe=UTF-8&um=1&ie=UTF-8&ei=n5jFSuqaAaPf8Ab6yqA-&sa=X&oi=image_result_group&ct=title&resnum=1
Brad Holland
http://www.google.com/search?q=brad+holland&hl=en&safe=off&client=safari&rls=en&prmd=ivnslo&tbm=isch&tbo=u&source=univ&sa=X&ei=txNIToeyAuWIsQLI2-3XBQ&ved=0CCYQsAQ
Esao Andrews
http://www.google.com/images?client=safari&rls=en&q=esao+andrews+prints&ie=UTF-8&oe=UTF-8&oi=image_result_group&sa=X
Ed Gorey
http://www.google.com/search?client=safari&rls=en&q=Ed%20Gorey%20art&oe=UTF-8&um=1&ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi
Mark Ryden
http://www.google.com/images?client=safari&rls=en&q=Mark+Ryden&ie=UTF-8&oe=UTF-8&oi=image_result_group&sa=X
Here are a few for you :
Marion Peck
http://www.google.com/search?client=safari&rls=en&q=Marion%20Peck%20paintings&oe=UTF-8&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&hl=en&tab=wi
Todd Schorr
http://www.google.com/images?q=Todd+schorr+paintings&btnG=Search&client=safari&rls=en&oe=UTF-8&oi=image_result_group&sa=X&aq=f&aqi=g1&aql=&oq=
Daniel Merriam
http://www.danielmerriam.com/index.php?option=com_ponygallery&Itemid=0&func=viewcategory&catid=1
Ray Caesar
http://www.google.com/search?client=safari&rls=en&q=Ray%20Ceasar%20paintings&oe=UTF-8&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&hl=en&tab=wi