TheFoxsCloak

Originally Posted by Comun

Part 1 had full disclosure of who wrote what. This stopped being a thing because the internet wouldn't stop bullying Sakurai over Septem. Starting with EoR, event, and chapter announcements would reveal who did it if it was Nasu or a guest writer, but Higashide's, Sakurai's, Minase's, Meteo's, and OKSG's works are anonymous. Gudaguda event streams also don't mention the writer is Keikenchi, but I'm not sure if that's a case of anonymity or not.

Anyway, who wrote what is discovered by pattern recognition and because Fate/Grand Order Material never stopped revealing the character creators for every Servant. Then two months ago, Meteo announced he did Salem, which is a surprise to literally no one, but we didn't know he could just publically say that. Higashide also got too proud of Paradise Lake and tweeted that this one was his. He later mentioned doing Atlantis, which ties with a Famitsu statement that Aeaea was made the Atlantis writer. In summary, everything here is my speculation unless stated otherwise.

The event commentary section in Famitsu is a major source of speculation material and confirmations here, you can my translation of those comments separated in blocks covering from Csejte Pyramid to Oo'oku, Las Vegas to Requiem, Paradise Lake to Turtle Island, Traum to Takasugi's White Day, Lilim Harlot to Mystic Eyes Symphony, and Luluhawa 2 to Nagasaki.

Nasu

Main story
- Fuyuki
- Prologue and epilogue of every main story chapter
- Camelot (non-Egypt parts)
- Babylonia
- Solomon
- SE.RA.PH
- Lostbelt prologue
- Avalon le Fae
- Nahui Mictlan
- Ordeal Call prologues
- Archetype Inception

Events
- Tsukimi
- Csejte (collab with Higashide)
- Salter Christmas
- Saber Wars
- Kara no Kyoukai
- Rashoumon
- Xuanzang
- Onigashima
- One half of Shadow Island (unknown which)
- Csejte Pyramid (collab with Higashide)
- Janta Christmas (collab with Higashide)
- Second half of Ishtar Cup (speculated)
- Csejte Pyramid Himeji (collab with Higashide)
- Ereshkigal Christmas
- Luluhawa
- Enma-tei
- Ishtar Fes (unsure)
- Servant Universe
- Luluhawa 2
- Nemo Christmas
- Kumano

Summer contributions
- 2: Second half of the main story + Nero and Salter team scenes
- 3: Main story + (I didn't read this event's side stories to know)
- 4: Melt's Casino
- 5: Fujino's side story
- 6: (I don't remember most of this event's side stories to know)
- 7: Gareth's side story
- 8: Main story

Higashide

Main story
- Orleans
- Okeanus
- E Pluribus Unum
- Solomon's scenes related to his Singularities
- Shinjuku
- Anastasia
- Atlantis (confirmed on Breakroom)
- Traum

Part 1 events
- Csejte (collab with Nasu)
- Valentine 1
- Jalter
- One half of Shadow Island (unknown which)
- Csejte Pyramid (collab with Nasu)
- Janta Christmas (collab with Nasu)

Speculation era events (non-White Day)
-Csejte Pyramid Himeji (collab with Nasu)
- Semiramis Valentine
- Apocrypha
- Nightingale Christmas
- Paradise Lake (confirmed on Twitter)
- Csejte Cinderella (collab with Minase, Sakurai, and Meteo) (confirmed on the 7th anniversary Famitsu)
- Csejte Liangshan
- Johanna Valentines

White Day
- Moriarty White Day
- Aeaea (confirmed on the 5th anniversary Famitsu)
- Slapstick Museum
- Bespectacled Intellectuals
- Charlemagne White Day

Summer contributions
- 2: Edison, Tesla and Helena team scene.
- 3: (I didn't read this event's side stories to know)
- 4: Casino Camelot
- 5: Main story + Xu Fu diaries + SygBrin's side story
- 6: Corday and Anastasia's side story
- 7: Jalter's park + Yan Qing's side story
- 8: Huyan's circle
- 9: Xu Fu's side story

Sakurai

Main story
- Septem
- London
- Camelot (Egypt parts)
- Solomon's scenes related to his Singularities
- Shimousa
- Oo'oku (Three Legs of Tokugawa parts)
- Gotterdamerung
- Olympus
- Heian
- Tunguska Sanctuary
- Id (confirmed by Routo)

Part 1 events
- Nero Fes 1
- Dantes
- Nero Fes 2

Speculation era events (real Events with story)
- Setsubun
- Oniland
- Murasaki Valentine
- Little Big Tengu
- Csejte Cinderella (collab with Higashide, Minase, and Meteo) (confirmed on the 7th anniversary Famitsu)
- Martha Christmas
- Arctic Summerworld

Box events with just two scenes
- Nero Fes 1
- Nero Fes 2
- Nero Fes 3
- Gil Fes
- Space Odysseus
- Faerie Knight Cup
- Illya Castle

Summer contributions
- 2: Xuanzang and Raikou's team scenes
- 3: (I didn't read this event's side stories to know, but there's one with Nightingale vs Raikou so that one)
- 4: Casino Pharaoh
- 5: Tomoe's and Murasaki's side stories
- 6: Caenis's side story
- 7: Main story
- 8: Tomoe's circle
- 9: Nikitich's side story

Meteo

Main story
- Salem (confirmed in Breakroom)

Events
- MHX Alter Valentines
- Las Vegas
- Csejte Cinderella (collab with Higashide, Sakurai, and Minase) (confirmed on the 7th anniversary Famitsu)
- Eight Dog Chronicles
- Wandjina World Tour

Summer contributions
- 2: Fran, Babbage, and Moriarty team scenes
- 3: (I didn't read this event's side stories to know)
- 4: Jeanne's casino
- 5: Jeanne's and Jalter's side stories
- 6: (I don't remember this event's side stories to know)
- 7: Lady Avalon's park + Erice's park + Erice's side story
- 8: Bakin's circle
- 9: XX Alter's side story and the desert chapter

Minase

Main story
- Agartha
- Oo'oku
- Yuga Kshetra
- PAPERMOON

Tower Events
- Amazoness.com
- Akihabara Explosion
- Mystic Eyes Symphony

Non-Tower Events
- Prisma Illya (collab with Hiroyama)
- Samba Christmas
- Karna Christmas
- Treasure Island
- Csejte Cinderella (collab with Higashide, Sakurai, and Meteo) (confirmed on the 7th anniversary Famitsu)
- Turtle Island
- Andromeda Valentines
- Dubai

Summer contributions
- 2: Nitocris and Scheherazade's team scenes
- 3: (I didn't read this event's side stories to know)
- 4: Osakabehime's Casino
- 5: Zetian's and Asclepius's side stories
- 6: Main story + Kama's post-game + Asclepius's side story
- 7: Zetian's park + Zetian's side story
- 8: Asclepius's circle
- 9: Main story

OKSG

- Nagiko Valentines (confirmed on the 5th anniversary Famitsu)
- Caren Valentines (confirmed on the 6th anniversary Famitsu)
- Bazett Valentines (confirmed on the 7th anniversary Famitsu)
- Nagasaki (confirmed on Twitter)

Summer contributions
- 6: Nagiko's side-story
- 7: Raikou's park + Raikou's side story (confirmed on the 8th anniversary Famitsu)

Editorial additions
- Eric's scene in Mystic Eyes Symphony (confirmed on the 8th anniversary Famitsu)

Keikenchi

- Honnouji
- Meiji Restoration
- Redline
- Final Honnouji
- Yamatai
- Saitama
- Sakai
- Takasugi White Day
- Makai

Summer contributions
- 2: Nobbu and X's team scenes
- 3: (I didn't read this event's side stories to know)
- 4: Okita's Casino
- 5: Nagiko and Suzuka's side story
- 6: Majin's side story

Guest writers

Main story
- SIN (Urobuchi)
- Imaginary Scramble (Amphibian)

Events
- Prisma Illya (collab with Minase)
- Zero (Urobuchi)
- Bunyan (Riyo and Kodachi)
- Kogetsukan (Madoy)
- Case Files (Sanda)
- Meihousou (Madoy)
- Requiem (Myougaya)
- Scáthach Grail Front (ACPI)
- Grail Live (Tanaka Takashi and Yano Shunsuke)
- Mississippi Mythicizers (Riyo)
- Lilim Harlot (Haganeya)
- Mordred's circle in Summer 8 (Tanaka Takashi)
- Ptolemy's Grail Front (Sanda)
- Waxing Moon (Haganeya)