Alethia - Canon is His Dark Materials, with tweaks, canon events are obviated.
Alucine - Original invention.
Arceus - Canon is the Pokémon game and anime franchise; canon events obviated.
Atlantis - Canon is the Hunger Games, with our events set a little before the first book.
Aurum - Canon is Luminosity for which canon is Twilight, canon events supplanted.
Avalon - Canon is the Wings series by Aprilynne Pike, canon events obviated.
Cape - Canon is , canon events supplanted.
Cenozoia - Canon is the Animorphs series by K.A. Applegate, canon events supplanted.
Chronicle - Canon is the Enchanted Forest Chronicles series by Patricia C. Wrede, our events about a century after Talking to Dragons.
Circle - Canon is the Circle of Magic series by Tamora Pierce, set about a hundred years after canon events.
Cosel - Original invention.
Downside - A kappa import.
Edda - See "Yggdrasil".
Eos - Effectively original, magic system inspired by "Daughter of Smoke and Bone" by Laini Taylor.
Equestria - Canon is My Little Pony: Friendship is Magic, canon events supplanted.
Everlasting - Canon is Tuck Everlasting by Natalie Babbitt, canon events supplanted.
Fantasia (Unnamed world, Raven's) - Canon is the Harry Potter series by J.K. Rowling, set almost immediately after canon events. Also draws from Alexandra Quick series (for Americanization and some Fantasia plot elements), Homestuck (heavily revised, for some Fantasia worldbuilding elements) and (for some feats of magical derring-do).
Garden - Canon is the movie "Tangled", canon events supplanted.
Gift - Original invention.
Guardian - Fusion of The Moon is a Harsh Mistress by Robert Heinlein with a random fanfic I can't find anymore about guardian angels. Canon relationship undecided.
Lake - Plot canon is a twist on "Swan Lake"; world is original.
Materia - Canon is by Alexandra Erin, our events about ten years after canon and thoroughly ignoring the possibility that canon will have results significant to our characters ten years along.
Milliways - Original inspiration from the Hitchhiker's Guide to the Galaxy. Use as found in glowfic is conventional for a parent genre of journal-based RP.
Names - Canon is my short story , with tweaks, canon events obviated.
Narnia - Canon is the Chronicles of Narnia by C.S. Lewis, set after Magician's Nephew and supplanting other canon events.
Nexus - Canon is the Vorkosigan Saga by Lois McMaster Bujold, canon events tracked/tweaked/embellished.
Opportunity - Original invention.
Origin (Q, Ghosts, Cindy's world, Dozen, Doyle) - Canon is the Dark Knight movie trilogy, with Batman genderswapped in most cases. Events in Origin pick up between the second and third movies and in Cindy's world during movie 3; the timeline in Q and Ghosts has been uninvestigated so far, and Dozen and Doyle were both interrupted by kidnappings of young Jokers. Doyle is so called because it also harbored Strat when he was being Sherlock Holmes and therefore takes that as canon as well.
Oz - Canon is the Oz series by L. Frank Baum, canon relationship undecided.
Pacifica - Canon is the movie Pacific Rim, canon events supplanted.
Peace - Fusion of Ender's Game (Orson Scott Card) and X-Men. Events of Ender's Game supplanted, events of X-Men continuity-insofar-as-we-understand-it-without-research loosely implied in modified form.
Quinn - Canon is the Elemental Blessings series by Sharon Shinn, set before canon events.
Rainbow - Canon is Mahou Shoujo Lyrical Nanoha, canon events cherry-picked and thin on the ground.
Rewind - Canon is Puella Magi Madoka Magica, canon relationship... complicated.
Rêverie - Plot canon is a nonspecific understanding of "Beauty and the Beast"; world is original.
Samaria - Canon is Sharon Shinn's angel series, set a little after Jovah's Angel.
Spirit (world possibly to be renamed) - Canon is Avatar the Last Airbender, with our events set about four centuries after Legend of Korra.
Sunshine (Phaeton, Apollo, Helios) - Canon is Buffy the Vampire Slayer, canon events supplanted (Sunshine) or obviated (others).
Superluminal - Fusion of Vorkosigan Saga and , Vorkosigan canon events tracked/tweaked/embellished and Skin Deep canon events obviated.
Syntropy - Canon is the Young Wizards series by Diane Duane, ignoring canon events.
Tayane - Original invention.
Thalassa - Plot canon is loosely "The Little Mermaid"; world is original.
Thilanushinyel - Canon is the antirecommended trilogy-pair Obsidian & Enduring Flame by Mercedes Lackey, with our events about a thousand years after the last book.
Unnamed world (Summer's) - Plot canon is the fairy tale "The Snow Queen"; world is original.
Warp - Canon is Star Trek (the rebootverse, with generous inspiration drawn from other series), set about a decade after the 2009 film and largely obviating the events of Into Darkness.
Yggdrasil, Edda - Canon is the Marvel Cinematic Universe; Edda also borrows the His Dark Materials concept of daemons. Edda supplants some canon events which Yggdrasil takes as read.
Chamomile - See "Alethia" in the Effulgence section. Tweaks differ.
Cycle - Original invention.
Gemini - Original invention.
Greenhouse - See "Avalon" in the Effulgence section.
Hex - Original invention.
Inferno - Original invention.
Kystle (New Kystle) - An Aestrix import.
Medallion - Canon is , canon events obviated.
Pantheon - An Aestrix import.
Quartet - Original invention, partially pivoted from an unrealized Effulgence concept.
Ravel - Original invention.
Tayane - Original invention, forked from Effulgence.
Treasury - Original invention.