New Writers For FIM

Season 1
Sandra Warren (Friendship Is Magic Part 1, The Ticket Master)
Tanya Vivian (Applebuck Season, Friendship Is Magic Part 2)
Trina Paddle (The Ticket Master, Look Before You Sleep, A Dog And Pony Show)
Susan Antsey (Griffon The Brush-Off, Call Of The Cutie) 
Donna Brushett (Boast Busters, Suited For Success)
Christine Avery (Dragonshy, Green Isn't Your Color)
Elizabeth Kavanagh (Bridle Gossip) 
Stacey Cribb (Swarm Of The Century, The Best Night Ever)
Heidi Price (Winter Wrap Up, Stare Master)
Amy Bennett (Fall Weather Friends, Over A Barrel, Party Of One)
Kim Keating (Feeling Pinkie Keen, The Cutie Mark Chronicles)
Cora-Leigh Keating (Sonic Rainboom, Owl's Well That Ends Well)
Susan Burnsey (The Show Stoppers, A Bird In The Hoof)
Season 2
Tanya Vivian (The Return Of Harmony Part 1, Luna Eclipsed, The Last Roundup)
Stacey Cribb (The Return Of Harmony Part 2, Read It And Weep, It's About Time)
Selena Strickland (Lesson Zero, Baby Cakes)
Helena Lane (Sisterhooves Social, A Friend In Deed)
Michelle Dober (The Cutie Pox, Hearth's Warming Eve)
Heidi Price (May The Best Pet Win!, Family Appreciation Day, Hearts And Hooves Day)
Amy Bennett (Sweet And Elite, The Super Speedy Cider Squeezy 6000)
Jackie Peach (The Mysterious Mare Do Well)
Roseanne Hackett (Secret Of My Excess)
Florence Strang (Putting Your Hoof Down, Hurricane Fluttershy, A Canterlot Wedding Part 1)
Amanda Hollet (Dragon Quest, Ponyville Confidential, A Canterlot Wedding Part 2)
Carol Callahan (Putting Your Hoof Down, MMMystery Of The Friendship Express)
Season 3
Amy Bennett (Too Many Pinkie Pies, Magical Mystery Cure)
Heidi Price (The Crystal Empire Part 1)
Kelly Rideout (The Crystal Empire Part 2, Keep Calm And Flutter On)
Florence Strang (One Bad Apple, Spike At Your Service)
Selena Strickland (Magic Duel, Spike At Your Service, Games Ponies Play)
Nicole Walsh (Sleepless In Ponyville, Keep Calm And Flutter On)
Jacinta Gaulton (Wonderbolts Academy)
Maryanne Brown (Apple Family Reunion, Just For Sidekicks)
Season 4
Tanya Vivian (Princess Twilight Sparkle Part 1, Flight To The Finish)
Carol Callahan (Castle Mane-ia, Pinkie Apple Pie)
Renee Walsh (Daring Don't, Bats!, Simple Ways, Maud Pie)
Heidi Price (Power Ponies)
Amanda Broomfield (Power Ponies, Rainbow Falls)
Margaret Cleal (Rarity Takes Manehattan)
Sandra Samson (Three's A Crowd)
Moreen Dominie (Power Ponies, Three's A Crowd, It Ain't Easy Being Breezies)
Amy Bennett (Pinkie Pride, Twilight Time, Testing Testing 123
Roseanne Hackett
Ann Kennedy
Season 5
Amy Bennett
Heidi Price
Roseanne Hackett
Paulette Riggs
Ellen Hickman
Moreen Dominie
Sandra Warren
Catherine Kennedy
Nicole Walsh
Season 6 (confirmed)
Amy Bennett
Roseanne Hackett
Amanda Hollet
Jacqueline Roff
Selena Strickland
Susan Antsey
Amy Senior
Catherine Kennedy