Blue headings are Calm Wind's squads.
Gold headings are "official" Expanded Wonderverse squads.
Red headings were filled in by Witching Hour. With exception of those that Calm Wind and/or the Expanded Wonderverse have named) these can be changed. Any names that have not been stated implicitly in a Wonderverse or EW story are marked by asterisks.

Squad 0
Shine Struck
PlayBitz
Calm Wind
Swift Justice

Lead/First squad
Spitfire
Fleetfoot
Soarin
Air Mach
Rapidfire (Dishonorably discharged)

Squad 2 - The Elements
Silver Lining
Wave Chill
Blaze
High Winds

Squad 3
Misty Fly
Fire Streak
Lightning Streak
Surprise

Squad 4 (Synchronized)
*Velvet Sprint
*Moonlight Spark
*Comet Specter
*Onyx Arrow

Squad 5 (Element Handlers):
*Sky Buster (wind)
*Astral Thunder (fire)
*Snow White (water/ice)
*Azure Lightning (lightning)

Squad 6 (Mock-Combat)
Riptide
Storm Dancer
Clear Sky
Midnight (Confirmed Calm character, given depth and tragedy courtesy of Sylvian)

Squad 7
Point Dex
Macho Savage
Lead Runner
Air Mach (Moved to squad one)
Storm Front

Squad 8 (Mixed)
*Gust Surfer
*Gold Sprite
*Winter Gust
*Wild Force

Squad 9 (light show)
Dazzleflash
Shadow Tail
Starbolt
Ember (name-dropped by Calm Wind, PtH127)

Squad 10 (old school club)
*Sunrise Hunter
*Smoky
*Sundance (Headcannon that Sundance is a Wonderbolt that tried out and got in when Little Star was first trying out)
*Wild Strikes

Squad 11 (intelligence gathering, aka Misfits)
Hornet
Sweet Harmony
Crimson Burst
Luminous Blitz
Dragon Eye (dedicated unicorn auxiliary)

Squad 12 (water + fire, aka Trolls):
Moonbow
Sunshower
Azure Star
Bear Claw

Squad 13
*Mistral Current
*Zephyr Gale
*Jet Stream
*Jazz Hooves

Squad 14
*Rain Song
Ranger (name-dropped by Calm Wind, PtH127)
*Wind Blade
*Bolt Charge

Squad 15 (artistic)
Starry Shine
Sand Storm
Ocean Blaze
Ember Shroud

Squad 16 (Lightning)
Thunder Bolt
Red Flare
Fret Glider
Dusk Writer

Squad 17
*Straight Arrow
*Stormy Greaves
Dozer (Confirmed Calm OC - was originally in the Recruit Squad with Soarin, Spitfire & Fleetfoot)
Ash Pyre (Confirmed Calm OC - was originally in the Recruit Squad with Soarin, Spitfire & Fleetfoot)

Squad 18
*Spring Frost
*Flare Spur
*Flash Freeze
*Dust Devil

Squad 19 (illusion)
Windy Shuffle
Melody Mist
Polar Rose
Moonlit Dawn

Squad 20
*Petal Breeze
*Amber Beam
*Frozen Spark
Black Bird (name-dropped by Calm Wind, PtH127)

Alpha - Effects and Light Show
Dusk Glimmer
Aurora Streak
Nimbus Prism
Flash Blitz
Zealous Leaf (to be replaced in PTH-timeline by Monkey Wrench)

Bravo - Spiral maneuvers
*Summer Cyclone
*Snowflake Swirl
*Moon Mist
*Shimmer Flurry
*Cirrus Aegis

Charlie
Prismatic Spray (Prisma)
*Wish Cloud
*Violet Glow
*Cobalt Shower
*Sunset Gold

Delta
Lilly Feathers (Confirmed Calm appearance - Captain's meeting after Cloudsdale)
*Thundersnow
*Steam Arc
*Bright Blast
*Quartz Shaft

Echo
Crystal Melody (Confirmed Calm appearance - Captain's meeting after Cloudsdale)
*Oak Shield
*Octave Scale
*Pearl Drop
*Charm Maille

Foxtrot
Rainbow Dash
Matteo
Little Star
Twister
Squall

Lilly is the captain of Bravo! (She's my OC)

She's a Strategist for the most part, but being a twin she has many abilities similar to the Streak twins. And she's a winter Pegasus. Can freeze fire if she's not careful.

(edit; on second thought... just leave her there. and thanks for the names for her squad. That was tripping me up.)

Had considered posting the roster here as well, but was thinking it'd get a tad confusing keeping both up to date.

5310093 Wait... what about Lightning Squad for squad 8?

5946965 I'll edit to add that now.
I also had to add Misfits.

5947307 Okay

5310093
Hey Witchy, I decided to change Lightning's number to 16. Just so that Thunder and Red's ages are more realistic.

5985688
Corrected in the file, will update this shortly.

5985789
Oh! And I also changed Thunder and Red's ages to 25. Again, for the sake of realism. You can thank Jim for that. XD