As I brought up on the Alien Shared Universe head-canon, here's the DCEU example of the same concept for lols.
Knightmare Timeline
2600 B.C. - Black Adam Precursor Part 1
2017 - Justice League
2021 - Black Adam Precursor Part 2
Snyderverse Timeline
15988 - Man of Steel: Prequel #1
???? - The Conjuring: Tales from the Artifact Room #3, "The Accordion Monkey"
1918 - Wonder Woman
1918 - Wonder Woman: Epilogue: Etta's Mission
194? - Blund's Lullaby
1951 - The Conjuring: Tales from the Artifact Room #5, "The Chalice"
1952 - The Nun
1956 - The Nun II
195? - VICE and 'The Conjuring' Present 'The 3:07 AM Project', "Box"
1958 - Annabelle: Creation
19?? - What's Wrong With Mom?
19?? - The Conjuring: Tales from the Artifact Room #1, "The Ferryman"
19?? - The Conjuring: Tales from the Artifact Room #4, "The Sleeping Song"
1969 - Wolves at the Door
1970 - Annabelle
1971 - The Conjuring
1972 - Annabelle Comes Home
1973 - The Curse of La Llorona
197? - The Confession
1977 - The Conjuring 2
1981 - The Conjuring: The Lover #1
1981 - DC Horror Presents: The Conjuring: The Lover #1
1981 - The Conjuring: The Lover #2
1981 - The Conjuring: The Lover #3
1981 - The Conjuring: The Lover #4
1981 - The Conjuring: The Devil Made Me Do It
198? - The Conjuring: Last Rites
1984 - Wonder Woman 1984: Museum Madness #1
1984 - Wonder Woman 1984
19?? - Innocent Souls
1991 - Man of Steel: The Early Years: Junior Novel
1999 - Aquaman: Undertow
1999 - Aquaman: Arthur's Guide to Atlantis
2010 - The Conjuring: Tales from the Artifact Room #2, "The Bloody Bride"
2013 - VICE and 'The Conjuring' Present 'The 3:07 AM Project', "This One, For the Lady"
2013 - VICE and 'The Conjuring' Present 'The 3:07 AM Project', "The Seance"
2013 - VICE and 'The Conjuring' Present 'The 3:07 AM Project', "One Last Dive"
2013 - Lights Out
2013 - Man of Steel
2013 - Batman v Superman: Dawn of Justice: Chapter Five, "Lex Luthor"
2013 - Batman v Superman: Dawn of Justice: Cross Fire
2013 - Batman v Superman: Dawn of Justice #1, "Playground Heroes"
2013 - Batman v Superman: Dawn of Justice #2, "Field Trip"
2013 - Batman v Superman: Dawn of Justice #3, "Picture Proof"
2013 - Batman v Superman: Dawn of Justice #4, "Lights Out"
2014 - Planet Krypton
2014 - Batman v Superman: Dawn of Justice: Chapter One, "Batman"
2014 - Batman v Superman: Dawn of Justice: Chapter Two, "Lois Lane"
2014 - Batman v Superman: Dawn of Justice: Chapter Three, "Senator Finch"
2014 - Batman v Superman: Dawn of Justice: Chapter Four, "Superman"
2014 - Batman v Superman: Dawn of Justice #1, "Upstairs/Downstairs"
2015 - Lex/OS Announcement
2015 - Fly to Gotham City With Turkish Airlines!
2015 - Fly to Metropolis With Turkish Airlines!
2015 - Time Out Shortlist: Gotham/Metropolis
2015 - Batman v Superman: Dawn of Justice: Ultimate Edition
2016 - Secret Files of the Suicide Squad #1
2016 - Suicide Squad #1, "Suicide Blonde"
2016 - Suicide Squad: Extended Cut
2016 - Purple Lamborghini
2016 - Caged
2017 - The Nurse
2017 - Zack Snyder's Justice League
2017 - Justice League: Mercedes Benz Presents #3, "Fast Food"
2018 - Justice League: Mercedes Benz Presents #1, "Joyride"
2018 - Justice League: Mercedes Benz Presents #2, "Guiding Lights"
2018 - Justice League: Mercedes Benz Presents #4, "Shifting Gears"
2018 - Justice League: Mercedes Benz Presents #5, "Pitstop"
2018 - Justice League: Mercedes Benz Presents #6, "Winner Drives"
2018 - Aquaman
2018 - Aquaman: King of Atlantis
2018 - Lights Out
2018 - Shazam!
2018 - Shazam!: Freddy's Guide to Super Hero-ing
2019 - Shazam!: Superhero Hooky
2020 - Arrow 8x08, "Crisis on Infinite Earths: Part 4"
2020 - Birds of Prey (and the Fantabulous Emancipation of One Harley Quinn)
2020 - Serving Up Justice #1
2020 - Serving Up Justice #2
2020 - Serving Up Justice #3
2020 - Serving Up Justice #4
2020 - The Suicide Squad
2021 - Peacemaker 1x01, "A Whole New Whirled"
2021 - Peacemaker 1x02, "Best Friends for Never"
2021 - Peacemaker 1x03, "Better Goff Dead"
2021 - Peacemaker 1x04, "The Choad Less Traveled"
2021 - Peacemaker 1x05, "Monkey Dory"
2021 - Peacemaker 1x06, "Murn After Reading"
2021 - Peacemaker 1x07, "Stop Dragon My Heart Around"
2021 - Peacemaker 1x08, "It's Cow or Never"
2021 - Peacemaker Presents: The Vigilante/Eagly Double-Feature #1
2021 - Peacemaker Presents: The Vigilante/Eagly Double-Feature #2
2021 - Peacemaker Presents: The Vigilante/Eagly Double-Feature #3
2021 - Peacemaker Presents: The Vigilante/Eagly Double-Feature #4
2021 - Peacemaker Presents: The Vigilante/Eagly Double-Feature #5
2021 - Mortal Kombat 1 (Peacemaker Ending)
2021 - The Flash: The Fastest Man Alive #1, "Stronger Than Steel"
2021 - The Flash: The Fastest Man Alive #2, "A New Phase"
2021 - The Flash: The Fastest Man Alive #3
2021 - Black Adam: The Justice Society Files: Hawkman #1
2021 - Black Adam: The Justice Society Files: Cyclone #1
2021 - Black Adam: The Justice Society Files: Atom Smasher #1
2021 - Black Adam: The Justice Society Files: Doctor Fate #1
2021 - Black Adam
2021 - Shazam!: Thundercrack #1
2022 - Shazam!: Fury of the Gods Special: Shazamily Matters #1
2022 - Shazam!: Fury of the Gods
2022 - The Flash
2023 - Justice League: Crisis on Infinite Earths: Part One [Tomorrowverse: Earth-1]
2023 - Justice League: Crisis on Infinite Earths: Part Two [Tomorrowverse: Earth-1]
2023 - Justice League: Crisis on Infinite Earths: Part Three [Tomorrowverse: Earth-1]
2026 - Guardians of the Galaxy Vol. 3 [Marvel Multiverse: Earth-199999]
Post-Flashpoint Timeline
2022 - Aquaman: Through Fire and Water #1
2022 - Aquaman and the Lost Kingdom Special #1
2022 - Aquaman and the Lost Kingdom
2023 - Blue Beetle
2025 - The Flash: Escape the Midnight Circus 1x01, "Priorities"
2025 - The Flash: Escape the Midnight Circus 1x02, "The Inherent Dangers of Time Travel"
2025 - The Flash: Escape the Midnight Circus 1x03, "Fully Torqued"
2025 - The Flash: Escape the Midnight Circus 1x04, "The Psychodome"
2025 - The Flash: Escape the Midnight Circus 1x05, "Cyclotron Don"
2025 - The Flash: Escape the Midnight Circus 1x06, "Blackout"
DC Universe
2023 - Creature Commandos 1x01, "The Collywobbles"
2023 - Creature Commandos 1x02, "The Tourmaline Necklace"
2023 - Creature Commandos 1x03, "Cheers to the Tin Man"
2023 - Creature Commandos 1x04, "Chasing Squirrels"
2023 - Creature Commandos 1x05, "The Iron Pot"
2023 - Creature Commandos 1x06, "Priyatel Skelet"
2023 - Creature Commandos 1x07, "A Very Funny Monster"
2025 - Superman
