For those of you confused about the models, I've actually gone and identified them all!
Hearts and Candy- Glory
Lights, Camera, Action- Strawberry Scoops with only her pink ringlet visible
Sweetness and Lace- Tootie Tails* (US name)/Summer Heatwave (cooler name)
Pageant Queen- Argie Powder
Something Old, Something New- Argie Novia (Truly variant, Pony Bride counterpart)
From the Designer Collection- Night Glider
The one who gave me the most trouble on that page was deflocked Taffy in Strike Up the Band!
Thank you for identifying those! I figured that was deflocked Taffy in Strike Up the Band, but I can't seem to figure out who's wearing Having a Luau or City Kids...the green unicorn has to be a nirvana.
Allow me to ID the whole page! Some of these are obvious, but I'll list them all.
Year Two
Spoiler
Pony Royal- Princess Tiffany/Pearl
Sweet Dreams- Bowtie
Best of the West- Applejack
The Tea Party- Vanilla Treat
Great Skates- Gusty
Parade Pizzazz- Tic Tac Toe
Year Three
Spoiler
Pony Luv- Bowtie
Pom Pom Pony- Music Time
party Time- Kiss Curl
Flashprance- Sunbeam
W/ Jewellery- see above
Mom & Baby
Sunday Stroll- Hopscotch, Baby Hopsi
Pony Workout- Love in a Mist, Ember (pink)
Snow Angels- Powder, Baby Noddins
Sun and Fun- Sunlight, Baby Sunribbon
Ready for Rainbows- Mommy & Baby Sister Sweet Celebrations
Prima Ballerina- Merriweather, Baby Alphabet
Year Four
Spoiler
Having a Luau- Argie Cherries Jubilee
Strike up the Band- Taffy (deflocked)
Neon Lights- Sugarberry/ Strawberry Fair
City Kids- Argie Rock pony (symbol similar to Half Note)
Baby Wear
Bunnysuit- Baby Sparkle Firefly
Overalls- Baby Starbow
Dragonsuit- Baby Pictures
Sunsuit- Baby Count-a-Lot (also incorrectly known as Baby Abacus)
Snowsuit- Baby Susie
Jumper- white Valentine twin
Bathrobe- Ember (lavender)
Clown Suit- Baby Tic Tac Toe
Megan and Pony Wear- all sets are Megan and Sundance
Year Five
Spoiler
Play & Wear- Mountain Boys... why, exactly? The outfits barely fit!
Hit the Slopes- Thundercloud
Milk 'N Cookies- Lightning
Sidewalk Surfer- Sunburst
Pretty as a Picture- Tornado (faded hair)
Pony Holiday- Fireball
Get into the Groove- Ice Crystal
Costume Wear
Pony-Naut- TE Sky Rocket
Rockin' the Night Away- Sweet Clover (pink)
Abra-Ca-Dabra- Gingerbread
Galaxy Glamour- Speedy (bright)
Academy Award- Dainty Dahlia
In the Center Ring- Cranberry Muffins
Baby Wear
Sleepwear- Ember (Ember's Dream)
Lion Suit- Baby Applejack
Party Dress- Baby Bowtie
Elephant Suit- Baby Pineapple
While a lot of these model choices were made with the card art or stickers in mind, I have a feeling there was some intentional obscurity thrown in!