Might as well put everything I have planned somewhere public so someone can bother me to actually write these

The Main Continuity

In my story ideas doc, this is listed as "canon compliant... to an extent"
What this means is that FiM and EG are 100% canon (unless the timelines contradict each other, in which case FiM takes precedent), the comics are 60% canon (basically I'll adapt comic lore to my own but it likely won't be a 1-1 translation), and for G5 it depends on how I'm feeling

Worlds of Destiny
Main characters: Grogar, Cain (OC, technically), NightFlame (OC, duh)
Crosses over with: Sonic, Skylanders Academy, Among Us, Kirby, Undertale, TF2, the Holy Bible, etc. Idk what I was doing with this one

The beginning. Can mostly be ignored, until MIRR comes up, and when it does come into play, it's mostly in broad strokes form.
Only thing of note is that the SCP universe (or more accurately, one of many) was destroyed and now that specific version of the Foundation is looking for a new home, and that Rainbow Dash has been displaced across universes

Equestria's End
Main characters (story 1): Twilight Sparkle, Luna, the rest of the Mane Six
Main characters (story 2): Rainbow Dash, Berry Burn (OC), NightFlame, Cain
Crosses over with: Sonic (implied)

Takes place following Worlds of Destiny. Twilight takes a trip to Skyros with her friends and Luna following Grogar taking over the world overnight thanks to excessive use of reality altering magical artifacts.

Meanwhile Rainbow Dash awakens in an unfamiliar place and is told to take down a bad guy, which, knowing Rainbow Dash, she immediately accepts.

Aeon Legion: Starlight
Main characters: Sunset Shimmer, Starlight Glimmer, Terra Mason, Cheeto (OC)
Crosses over with: Aeon Legion

Time travel has made the Edge of Time a dangerous place.
To protect the Edge of Time from devastation, the Aeon Legion seeks the greatest soldiers and warriors from across history. Those they deem worthy gain a chance to compete in the toughest training program ever designed at Aevum Academy.
Their latest recruits? Take a look at the main characters section and guess
Takes place at the same time as Equestria's End... somehow

The Lost Flare
Main characters: Sunset Shimmer, Twilight Sparkle, Opaline Arcana, Chrysalis
Crosses over with: nothing (shocker)

After the events of Aeon Legion: Starlight and Equestria's End, Sunset returns to Equestria and learns what it means to be in her new role. Meanwhile, Opaline makes her move, and Chrysalis gets extremely desperate.
This is what I mean by "canon compliant... to an extent".

Story starts out with Sunset adapting to life in Equestria, then immediately takes a hard turn to the left when Opaline attacks

The Last of Skyros
Main characters: Opaline, some alicorn oc idk

Part of the main continuity, I guess. Not required reading at all

MIRR - A New Dawn
Main characters: Sunset Shimmer, the Equestria Girls
Crosses over with: SCP

After a year in Equestria, Sunset returns to Canterlot—the human one—and finds out just how much can change in one year.

Not The Future: A New Generation - title pending review
Main characters: Swift Foot, Sandbar, Sunny Starscout, Zipp Storm, basically the entire cast of A New Generation

As part of her apprenticeship to Sunset, Swift Foot is sent to Maretime Bay. Sandbar goes with her.
Not too long after they arrive, Izzy Moonbow shows up in town and the plot of A New Generation is kicked off

For Later
MIRR - OR (follows up on A New Dawn, stars the same characters, still an SCP crossover)
Aeon Legion: Saturn City (follows up on whatever loose plot threads from Starlight need to be covered in an Aeon Legion crossover specifically)
Across the Multiverse - Sunset Shimmer (this is just whatever bullshit I want to write)
Into the Void (ambitious crossover event that I might never get to lmao)
Not The Future: Make Your Mark (follows up on Not The Future: A New Generation and The Lost Flare)

In Limbo
Shark Wars: Razor's Edge - currently uploaded on AO3 complete with incomplete parts. Story is still canon (or at least what I was thinking for the rewrite is), I'm just not sure if I want to write it

Other Continuities

Basically just anything else that takes place in this multiverse

Sunset the Marauder - title pending review
Main characters: Sunset Shimmer, Harry Potter
Crosses over with: Harry Potter

Sunset crosses the portal to leave Equestria... and winds up at Hogwarts in the year 1972. Shit happens, I guess.

Emperor of Equestria
Main characters: Frieza, Cooler
Crosses over with: Dragon Ball

King Yenma decides to give a pair of brothers a second chance by sending them to a place that has a knack for reforming villains. Surely this won't go poorly, right?

Instance Effect
Main characters: Sunset Shimmer, Celestia, Cadance

Sunset Shimmer Peggy Sue fic... kinda. Her past self is still there and she is pissed.

Equestria At War: The Fall of Harmony
Main characters: Luna, Carrot Stick

Equestria has fallen. New Mareland has fallen. The Riverlands have turned on each other. Harmony is no more.
Not if Luna has anything to say about it.

Skies of Equestria
Alternate title: My Little Pony: Bonds of Battle
Main characters: Team Sky Mikey, Twilight Sparkle

At first this was just a thought experiment to see what kind of pokemon to give to MLP characters but then Team Sky got in the way
That's really it. MLP characters have pokemon and they fight Team Sky

Endless Possibilities
Main characters: Sunny Starscout, Flurry Heart

Remember those timelines Starlight made? Now imagine what happens to them by the time G5 rolls around
I do not give a shit about G5 lore specifically when it takes place in the same universe as G4, this is just a fun thought experiment

The Starswirl Continuum - title pending review
Main characters: Twilight Sparkle, Sunset Shimmer, Nightmare Moon, Daybreaker

Over one thousand years ago, Clover the Clever took his mentor's place at Ponhenge. One thousand years later, Equestria has split apart, the Royal Sisters are long gone, and Starswirl the Bearded rules with an iron hoof over the unicorns that remained loyal
Sunset Shimmer was once part of Starswirl's inner circle, until Starswirl cast her out. A bitter mare, she now wishes only for revenge against him.
Twilight Sparkle is currently part of Starswirl's inner circle. She believes nothing could shake her loyalty to Starswirl, but when her brother goes against her mentor, she is forced to pick a side.
All while the Cult of the Alicorns runs rampant across the land that—for a brief moment—was known as Equestria

Fandom Fights (random): Season One (semi-sequel to Worlds of Destiny)
ORD Organization (random): Published stuff
A Story: Expanding Universe (was original fiction until for some unknown reason Jevil became teh final boss) (on hiatus for the foreseeable future): Magical Wristbands

Random story ideas I'm too lazy to write (these may or may not be actually canon to the stories I've written)

Sombra arrives on the Pie Family Farm during Hearth's Warming, but is actually there to celebrate. He brings crystals (and meth)

Due to a technicality regarding dragon culture, Twilight Sparkle is married to Princess Celestia.

A "story" that has no plot whatsoever and is just Luna ranting about things. While stealing Celestia's ice cream stash.

Filly Sunset Shimmer commits arson.

Fluttershy gets replaced by Richard Nixon, who spends the entire story spouting Nixon quotes, and nobody notices. Example:

Rainbow Dash: Hey, Fluttershy, Princess Luna wants me to (insert something that will happen later). How should I do it?

Richard Nixon: Fate has ordained that the men who went to the moon to explore in peace will stay on the moon to rest in peace.

Rainbow Dash: Thanks a bunch!