JCPenney #410528 Stablemate Parade of Breeds - Thoroughbred (2011) is beautifully shaded dark bay with a satin to semi-gloss finish and off-side socks.
Play Set #5405 Horspital Play Set (2008-09) is a bright red bay with a satin to semi-gloss finish and a blaze.
Target #720234 Pony Gals - New Arrival Play Set (2009) is a creamy tan buckskin with three stockings (not off-fore) and a big blobby star.
JCPenney #410443 Stablemate Parade of Breeds - Arabian (2010) is a softly shaded red chestnut with slightly darker mane/tail, grey hooves, and eye-whites.
JCPenney #410421 Stablemate Parade of Breeds - Trakehner (2007) is a slightly darker red chestnut with three stockings (not near-hind), a large star, and eye-whites.
Gift Set #5394 Grey Horse & Chestnut Foal (2016-Current) is very similar to #410443, being a softly shaded red chestnut, but the mane/tail are self-coloured, the ankles are pale rather than grey, the model lacks eye-whites and has a small star.
Play Set #5406 Kittens & Foals Play Set (2008-09) is a dark bay with an airbrushed blanket extending onto the barrel with polka-dot spots, an off-hind sock, eye-whites, and a blaze.
K-Mart Gift Set #6127 Stablemates Fun Foals Gift Pack (2008) is a sandy bay with a stenciled hip blanket with tiny fleck spots, three socks (not off-fore), and eye-whites.
Mid-States Distributing/Rural King #9962502 Deluxe Farm Pocket Barn (2007) looks very similar to #5406, but is a true black instead of dark bay. The blanket is airbrushed with polka-dot spots and extends onto the barrel. The model has two socks on the near-fore and off-hind, star, snip, and eye-whites
Gift Set #5972 Stablemates Fun Foals 5-Piece Gift Pack (2007-08) is a golden chestnut tobiano with a splotchy pattern, self-coloured tail, darker two-toned mane, four white legs, pinky-tan hooves, and a jaunty blaze.
JCPenney #410176 Stablemates Parade of Breeds - Paint (2006) is a slightly darker golden chestnut tobiano with the wither and rump pattern, four stockings, and a large star.
Gift Set #5977 Stablemates 5-Piece Fun Foals (2009-10) is a sooty palomino with dark shading on the face and joints, bright white mane/tail, socks on the near-fore and off-hind legs, a small star, and eye-whites.
Play Set #5370 Horse Crazy Pocket Barn (2013-Current) is a creamy yellow palomino with shaded legs, a tiny star, and eye-whites.
Many thanks to Deb Walsmith and MySt of My Stablemates for providing pictures for this post!