Lunacy:

Twilight Sparkle
Sunset Shimmer
Lightning Dust
Spike
Shining Armor
Diamond Tiara
Silver Spoon
Cadance
Flash Sentry
Scootaloo
Rarity
Beth Drollins
Rosely Reigns
Diane Ditzbrose
Lyra
Bon Bon
Flitter
Cloudchaser
Snails
Snips
Fancypants
Fleur de Lis
Fluttershy
Bulk Biceps
Berry Punch
Bill Nyeker
Clip Clop
Dance Fever
Hugh Jelly
Geri (Manager of Gizmo)
Gizmo
Turf
Hoops
Dumb-Bell
Twist
Gustave Le Grand
Maud Pie
Tom (Manager of Maud)
Honeycomb
"The Killer Bee" Midnight Strike
Neon Lights
Zema Ion
Rumble
Damien Sandow
Overdrive (Commentator)
Vultarian (Commentator)

Authority Figures:
Star Swirlanaitis (Executive Vice President of Talent Relations)
Luna (General Manager)

Sublime:

Rainbow Dash
Pinkie Pie
The GREAT and POWERFUL Trixie
Spitfire
Soarin
Big MacIntosh
Amira
Haakim (Personal Ring Announcer of Amira)
Apple Bloom
Applejack
Colgate
Thunderlane
Sweetie Belle
Octavia
Zack Ryder
Aloe
Lotus Blossom
Cheerilee
Daring Do
Braeburn
Blueblood
Caramel
Photo Finish
Granny Smith
Doughnut Joe
Vinyl Scratch
Hoity Toity
Pipsqueak
Red Delicious
Golden Delicious
Happy Trails
Ace
Marble Pie (alternately Inkie Pie
Limestone Pie (alternately Blinkie Pie)
Steamer
Babs Seed
Uncle Wing
Sweet Tooth
Nurse Redheart
Pretty Vision
Davenport
Check Mate
Commander Hurricane
Squire (Personal Ring Announcer of Commander Hurricane)
Discord (Commentator)
Dr. Whooves (Commentator)

Authority Figures:
Celestia (General Manager)

Tag Team's:

Lunacy:

Diamond Tiara and Silver Spoon.
Lyra and Bon Bon.
Flitter and Cloudchaser.
Diamond Tiara and Turf.
Turf and Silver Spoon.
Rarity and Twilight Sparkle (Again. More of an alliance and friendship.)
Cadance and Twilight Sparkle (Friendship.)
SLIME (Snips and Snails)
EGO (Gustave Le Grand and Fancypants) (With Fleur de Lis as manager)
Hoops and Dumb-Bell
Horsepower and Rumble
NION Lights (Neon Lights and Zema Ion)
Scootaloo and Berry Punch

Sublime:

Beauty Shot - Photo Finish and Pretty Vision
Aloe and Lotus
The Ghost Girls - Inkie Pie and Blinkie Pie
The Wonderbolts - Soarin and Spitfire (Cannot compete for EITHER tag team title because of gender restrictions, but that's why intergender matches exist.)
Red Delicious and Golden Delicious
Braeburn and Happy Trails
Canterlot Class - Hoity Toity and Blueblood
Couch-Mate - Davenport and Check Mate
The Apple Dynasty can also contain many tag teams

Stables:

Lunacy:

The Mean Girls - Diamond Tiara, Silver Spoon, and Turf
The Oddities - Clip Clop, Hugh Jelly, Dance Fever, "The Killer Bee" Midnight Strike
Rumble Roses - Rumble, Flitter, Bulk Biceps, and Cloudchaser. (Stable name based off of a video game with the same name.)

Sublime:

The Apple Dynasty - Applejack, Big MacIntosh, Apple Bloom, Granny Smith, Braeburn, Red Delicious, Golden Delicious, Happy Trails, and Sweet Tooth.
Apple Corre - Big MacIntosh, Apple Bloom, and Applejack (Managed by Granny Smith.) (Mini-stable that coincides with The Apple Dynasty.)

Champions:

Lunacy:

Women's Eternal World Champion: Twilight Sparkle
Champion of Carnage: Rumble
Chick Combo Champions: Silver Spoon and Turf
Crater Chick Champion: Sunset Shimmer

Sublime:

World Fighters Champion: Trixie
World Brawlers Champion: Thunderlane
International Champion: Daring Do
Sublime Tag Team Champions: Spa Twins (Aloe and Lotus Blossom)

Shared:

Combos of Carnage Tag Team Champions: Gustave Le Grand and Fancypants