To give some impression, these are the 215 series not ranked so far (in alphabetic order):
So everybody who has read one of these and can provide a feedback helps us to make the list of "ranked" series longer.... (Status 20/10/2015)
Update 20/10/2015: Have added "Iron Nails" by forum member
@MattKnott to the listing so that people who have already read it can provide ratings!
Also "The Slow Regard of Silent Things" and "Rain Wild Chronicles", who were so far not featured as separate series.
Added "Shadowdance"
A Land Fit for Heroes, Richard K Morgan
A Rendezvous in Averoigne, Clark Ashton Smith
Abarat Quintet, Clive Barker
Aegypt, John Crowley
Agyar, Steven Brust
American Specter, Rasheedah Prioleau
Anders, Wolfgang Hohlbein
Arafel, C. J. Cherryh
At the Back of the North Wind, George MacDonald
Barbed Coil, J. V. Jones
Black Magician, Trudi Canavan
Blackhand, Matt Hieber
Bone (Comic), Jeff Smith
Book of Lies, Brad Meltzer
Book of Words, J. V. Jones
Books of Swords, Fred Saberhagen
Chronicles of Prydain, Lloyd Alexander
Chronicles of the Raven, James Barclay
Collegia Magica, Carol Berg
Course of the Heart, Michael John Harrison
Craft Sequence, Max Gladstone
Crestomanci, Diana Wynne Jones
Crown & Key, Clay Griffith & Susan Griffith
Dalemark Quartet, Diana Wynne Jones
Damar, Robin McKinley
Damiano Trilogy, R. A. MacAvoy
Darger and Surplus, Michael Swanwick
Darker Shade of Magic , V.E. Schwab
Daughter of Smoke and Bone, Bone Laini Taylor
Deed of Paksenarrion, Elizabeth Moon
Derkholm, Diana Wynne Jones
Dinosaur Lords, Victor Milan
Dragon Prince Trilogy, Melanie Rawn
Dragonriders of Pern, Ann McCaffrey
Dread Empire, Glen Cook
Dreamblood Duology, N. K. Jemisin
Earthseed, Octavia Butler
Ember in the Ashes , Sabaa Tahir
Engine Summer, John Crowley
Engineer Trilogy, K. J. Parker
Eternal Champion, Michael Moorcock
Faerie Tale, Raymond E Feist
Faust Among Equals, Tom Holt
Felix Castor, Mike Carey
Fly By Night, Yasmine Galenorn
Genesis, Wolfgang Hohlbein
Gloriana, Michael Moorcock
Godslayer Chronicles, James Clemens
Godspeaker Trilogy, Karen Miller
Great Book of Tarzan, Edgar Rice Burroughs
Greatcoats, Sebastien de Castell
Greek Series, David Gemmell
Grendel, John Gardner
Heart of the World , Col Buchanan
Heir Chronicles, Cinda Williams Chima
Howl's Moving Castle, Diana Wynne Jones
Hrolf Kraki's Saga, Poul Anderson
Hungry City Chronicles, Phillip Reeves
Hunting the Ghost Dancer, A. A. Attanasio
Inkworld, Cornelia Funke
Instrumentalities of the Night, Glen Cook
Iron Tower Saga, Dennis L. McKiernan
Jig The Goblin, Jim C. Hines
Jon Shannow Series, David Gemmell
Kane Series, Karl Edward Wagner
Karen Memory , Elizabeth Bear
Kindred, Octavia Butler
King of Elfland's Daughter, Lord Dunsany
Last Light of the Sun, Guy Kavriel Kay
Left Hand of God, Paul Hoffman
Little, Big, John Crowley
Lives of the Mayfair Witches, Anne Rice
Looking Glass Wars Trilogy, Frank Beddor
Lord of Light, Roger Zelazny
Low Town, Daniel Polansky
Lucan Drakenfeld, Mark Charan Newton
Lud-in-the-Mist, Hope Mirrlees
Magic Ex Libris, Jim C. Hines
Magic Kingdom of Landover, Terry Brooks
Master of the Day of Judgement, Leo Perutz
Millenium's Rule, Trudi Canavan
Monster Hunter International, Larry Correia
Morgaine & Vanye, C. J. Cherryh
Morlock Ambrosius, James Enge
Morningstar, David Gemmell
Mortal Instruments Series, Cassandra Clarke
Necroscope, Brian Lumley
Night Land, William Hope Hodgson
Nightwise, R.S. Belcher
Ombria in Shadow, Patricia A. McKillip
Once and Future King, T. H. White
Only Human, Tom Holt
Operation Otherworld, Poul Anderson
Our Ancestors Trilogy, Italo Calvino
Oz, L. Frank Baum
Patternmaster, Octavia Butler
PC Grant series, Ben Aaronovitch
Peace, Gene Wolfe
Perfume, Patrick Sueskind
Peter Pan, J. M. Barrie
Phantastes, George MacDonald
Princess and the Goblin, George MacDonald
Princess Series, Jim C. Hines
Quickening Series, Fiona McIntosh
Quintspinner Trilogy, Dianne Greenlay
Rai-Kirah Series, Carol Berg
Red Queen , Victoria Aveyard
Remembrance, Jude Deveraux
Renshai Trilogy, Mickey Zucker Reichert
Requiem, Graham Joyce
Riddle-Master Trilogy, Patricia A. McKillip
Rigante Series, David Gemmell
Saga of the Reindeer People, Robin Hobb (as Megan Lindhom)
Septimus Heap Series, Angie Sage
Seven Realms Series, Cinda Williams Chima
Sevenwaters Trilogy, Juliet Marillier
Shadow Police, Paul Cornell
Shadow Saga, Jon Sprunk
Short Stories, Clark Ashton Smith
Soldier of the Mist, Gene Wolfe
Songs of Earth and Power, Greg Bear
Spirit Ring, Lois McMaster Bujold
Study Series, Maria V. Snyder
Summoner, Taran Matharu
Symphony of Ages, Elizabeth Haydon
Tales of the Timuras, Allan Cole
Temeraire Series, Naomi Novik
The Alchemy Wars, Ian Tregillis
The BFG, Roald Dahl
The Broken Sword, Poul Anderson
The Chronicles of Master Li and Number 10 Ox, Barry Hughart
The Crescent Moon Kingdoms, Saladin Ahmed
The Cycle of Arawn, Edward Robertson
The Deep, John Crowley
The Dwarves, Heitz
The Empty Throne, Daniel Polansky
The Faithful and the Fallen, John Gwynne
The Fold , Peter Clines
The Forbidden Library, Django Wexler
The Hammer, K. J. Parker
The Iron Dragon's Daughter, Michael Swanwick
The Land of Laughs, Jonathan Carroll
The Laundry Series, Charles Stross
The Red Queen's War, Mark Lawrence
The Sandman, Neil Gaiman
The Scar, Maryna Dyachenko
The Screwtape Letters, C. S. Lewis
The Sharing Knife, Lois McMaster Bujold
The Southern Vampire Mysteries / Sookie Stackhouse, Charlaine Harris
The Stone Raft, Jose Saramago
The Vagrant , Peter Newman
The Vault of Heaven, Peter Orullian
The Very Model of a Man, Howard Jacobson
The View from the Mirror Series, Ian Irvine
The Well at the End of the World, William Morris
The Worm Ouroboros, Eric Eddison
Thessaly, Jo Walton
Tiger and Del, Jennifer Roberson
Till we have Faces, C. S. Lewis
Time Salvager , Wesely Chu
To Reign in Hell, Stephen Baust
Tournament of Shadows, James Enge
Vlad Taltos, Steven Brust
Voice of the Fire, Alan Moore
Waiting for the Barbarians, J. M. Coetzee
War for the Oaks, Emma Bull
Way to Babylon, Paul Kearney
Weaveworld, Clive Barker
When They Shine Brightest , Yordan Zhelyazkov
Wild Hunt, Elspeth Cooper
Windhaven, Lisa Tuttle and G. R. R. Martin
Ysabel, Guy Kavriel Kay
Zamonia, Walter Moers
Zimiamvia Trilogy, E. R. Eddison
A Pattern of Shadow & Light, Melissa McPhail
Journey to the West / Monkey King, Wu Cheng'en
Rogues of the Republic, Patrick Weekes
The Company Man, Robert Jackson Bennett
The Erebus Sequence, Den Patrick
The Shadow of What was Lost, James Islington
The Stress of Her Regard, Tim Powers
The Ties that Bind, Rob J. Hayes
The Traitor Son Cycle, Miles Cameron
The Wars of Light and Shadow, Janny Wurts
Uprooted , Naomi Novik
Valdemar: The Last Herald-Mage, Mercedes Lackey
Vicious, V.E. Schwab
White Trash Zombie, Diana Rowland
The Slow Regard of Silent Things, Patrick Rothfuss
Iron Nails, Matt Knott
Shadowdance, David Dalglish
The Queen`s Thief, Megan Whalen Turner
The DragonCrown War Cycle, Michael A. Stackpole
Saga of Anaimon, Timothy Nancarrow
Stormlords Trilogy, Glenda Larke
Chronicles of the Necromancer, Gail Z. Martin
The Divinity Student , Michael Cisco
On Stranger Tides , Tim Powers
The League of Princes, Christopher Healy
Heartstrikers, Rachel Aaron
Imager Portfolio, L.E. Modesitt jr.
JOB: A Comedy of Justice, Robert Heinlein
The Vampire Chronicles, Anne Rice
The Picture of Dorian Gray, Oscar Wilde
The Sangreal Trilogy, Amanda Hemingway
Green Rider Series, Kristen Britain
The Troupe, Robert Jackson Bennett
James and the Giant Peach, Roald Dahl
Matthew Swift Series, Kate Griffin
Ephemera Series, Anne Bishop
Bobby Dollar Series, Tad Williams
Allie Beckstrom Series, Devon Monk
The Wardstone Trilogy, R.J Mathias
The Banned and the Banished, James Clemens
Karavans, Jennifer Roberson
Saga of the Forgotten Warrior, Larry Correia
The Tears of Artamon, Sarah Ash
The Book of Lost Things, John Connolly
The Book of Atrix Wolfe, Patricia A. McKillip
Solstice Wood, Patricia A. McKillip
In the Forests of Serre, Patricia A. McKillip
The Tower at Stony Wood, Patricia A. McKillip
Winter Rose, Patricia A. McKillip
Song for the Basilisk, Patricia A. McKillip
The Birthgrave Trilogy, Tanith Lee
The Secret Books of Paradys, Tanith Lee
The Blood of Roses, Tanith Lee
Awake in the Night Land, John C. Wright
Iron Chamber of Memory, John C. Wright
The Four Arts, M.J. Scott
The Kharkanas Trilogy, Steven Erikson
Chronicles of the Cheysuli, Jennifer Roberson