Qvarie maintains a wiki in Japanese about special characters of the world, including emojis, of course. Some issues I thought I was the first to raise here were already documented there years earlier.
Specific References
Emoji variants not reflected in Unicode
Part 1: pre-Unicode and early Unicode implementations
Willcom: leftwards and rightwards Radio Waves (Denpa, Dempa), Oncoming Motorcycle (:motorcycle: or :motor_scooter:), Baseball with Bat instead of :baseball: #67, Record Disc instead of :dvd: or :cd: #71, Exit and Emergency Exit (:running_man:+:door:), Uncle おやじ bald man with one hair in the middle (sir, father, uncle, mister), Squared CJK Ideograph 91CD Important, Jizo (Japanese Buddha), Hachiko (statue of famous faithful dog), several company logos
E-Mobile: variant of U+1F612 :drooling_face: 😒 with white eyes, Community (people holding hands standing on a globe), Squared HIT Sign, Coin #137
iPhone (iOS 5): golf ball #66 instead of :golf: or :golfing_man:, Japanese graduation clothing instead of mortar board :mortar_board:, scallops shell 🐚 :shell: (mollusk :snail:), :lips: vs. :kiss:
Disney Mobile (Softbank): Tornado instead of Typhoon 🌀, Shoe Prints instead of Foot Prints :footprints:, Pacifier for Baby :baby: #381
J-Phone (Softbank): Teacher emoji was unified with News Anchor into :tipping_hand_woman: (now: :man_teacher:), a Planet with Orbit emoji was dropped (because it was also the logo of the Sky Walker service)
Vertu: Ginkgo was unified with 🍃 U+1F343
Part 2: AI Publishing Symbol Dictionary (エーアイ出版 『記号辞書』 ISBN 4871931838) for NEC PC-9800 series
animals: Insect Face, Dragonfly, Dove/Pigeon :dove:, Grasshopper and Cicada (Cricket in Unicode 10), Mole, Jellyfish #214, Larva / Caterpillar (like some Bug :bug: variants), Butterfly :butterfly:, Lion Face :lion:, Animal(?) Face, Squirrel #108, Beckoning/Lucky Cat (manekineko) #89, Bird Face, Hippopotamus #105, Moth #163, Crab :crab:, Sealion (todo) and Seal #102, Shrimp :shrimp:, Fly #150, Snow Rabbit (with leaves as ears), Earthworm #261
people: Man with Silk Hat or Gentleman (monocle in Unicode 10), Man with Hat (:cowboy_hat_face: :man_with_gua_pi_mao: :tophat: :man_in_tuxedo: ?), Bald Person (proposed for Unicode 11), Person with Shaved Head (monk?), Person with War Bonnet = Native American Chief (#149), Samurai #5, Clown :clown_face: or Mime
faces: He-no-he-no-mo-he-ji a scribbled face made of 7 hiragana letters (he へ eyebrows, no の eyes, mo も nose, he へ mouth, ji じ outline)
Squared Ideograph 4F4f sumi mark: address, 4EA4 cross mark: traffic information, police box, 5E74 year mark: age, 8077 job mark: occupation, 5E2D seating mark: attendance, 8D85 super (market), 6025 quick mark: express, 8CB7 purchase mark: buy, 58F2 sale mark: selling, auction, 7A0E tax mark: tax included, 7CFB system mark: lineage, strain, 65CF family mark: group select, 6625 spring mark (season), 590F summer mark, 79CB autumn mark, 51AC winter mark
Katakana baito for 1. part-time job (German Arbeit) or 2. byte
Seagull #90, Beetle (differs from :bug: and :beetle:), Radish, Uncle ojisan, mister (with beard), Aunt madam, Motorbike (between Scooter :motor_scooter: and Racing :motorcycle:), Chauldron or Kettle, Steamed Bun (nikuman, baozi, chuka), Sea or Ocean :ocean: (scenery with seagull and lighthouse #159), River (scenery with bridge :bridge_at_night:), Floating Tube or Ring as in a swimming pool, Fitness #335, Bike Helmet (cf. :racing_car: and :motorcycle:)
Gakuran (Japanese school uniform, cf. old Apple emojis), Sailor Suit #351, Tank Top (unlike :shirt: and :running_shirt_with_sash:), Trunks or Briefs or Underpants (male variant of :bikini:), Skirt (separate from :dress:), Cowboy Hat (without head as in :cowboy_hat_face:) #20, Earring, PHS Mobile Phone and Cordless Phone (both distinct from cell phone :iphone: and :phone: and :telephone_receiver:), Notebook or Laptop Computer (basically the same as :computer:), Eraser #288, Staircase Up and Down #299, Window, Wall, Brick #127, Rock Mountain (distinct from :mount_fuji:, :mountain: and :mountain_snow:), Flagstones or Tiles, Sword (distinct from :crossed_swords: and :dagger:), Knight's Armor #283, (Magic) Wand #160 or Walking Cane #345, Magic Scroll (distinct from :scroll:), Pot or Vase (similar to :amphora:, :shallow_pan_of_food: or :stew:), Treasure Box or Chest #77, Pincer Pliers, Ladder #237, Tobacco or Box of Cigarettes, Tin Can (in Unicode 10), Futon (distinct from :couch_and_lamp:), Hand Mirror, Kettle or Teapot yakan, Drawers or Closet, Paycheck (as a bag like :moneybag:), Bonus symbolized by an Aubergine/Eggplant on a Stick
Katakana TEST with Pencil Below, Diet, Machine or Gadget
Part 4.3: Person Dancing Cossack-Style, Person with Raised Index Finger attention, Abdominal Pain, Black Angry Face (variant of :angry:), :weary:+:sos:, Face with Bump or Bruise beaten-up, Hip Shaking ~ #63, separate Left and Right Footprints :footprints:, Soccer Player #66, Japanese Symbol for Older Driver (cf. :beginner:), Computer Mouse :computer_mouse:, Grilled Meat kebab etc. (distinct from :meat_on_bone:), Broom #128,
Part 5: Instant messenger pictographs (Skype #253, Microsoft #256, Yahoo #255, vBulletin)
(Face with) Lips Sealed (with bandaids, so distinct from :zipper_mouth_face: and shush face in Unicode 10), Sick Face :nauseated_face:, Puking Face (Unicode 10), D'oh Face (Homer Simpson) | :woman_facepalming:, Grinning Face with Angry Eyes or Face with Evil Grin or Face with Baring Teeth (cf. :smiling_imp: and :grimacing:), Rolling on the Floor Laughing :rofl:, Exhausted or Sighing Face (:hushed:), Drooling Face :drooling_face: #255, Drunk Face #11 #114 #253, Depressed Face #4 #253, Face with Foot in Mouth #257, Face Banging against Wall #253, Secret Telling or Whispering (shushing face in Unicode 10), Swearing Face (Unicode 10), Daydreaming #255, separate Right and Left Hug #256, Person Mooning #253 #334, Pool Party #253, Handshake :handshake:
L2/09-007 Comparison of Emoticons from Major Vendors by Arle Lommel: Unification of emoticon characters with current proposals for encoding emoji (v1.5, 2008-12-26) – Skype #253, Microsoft Messenger #256, Yahoo Messenger #255, AIM #257, Google #252, phpBB, vBulletin.
Qvarie maintains a wiki in Japanese about special characters of the world, including emojis, of course. Some issues I thought I was the first to raise here were already documented there years earlier.
Specific References
Emoji variants not reflected in Unicode
Butterfly:butterfly:,Lion Face:lion:, Animal(?) Face, Squirrel #108, Beckoning/Lucky Cat (manekineko) #89, Bird Face, Hippopotamus #105, Moth #163,Crab:crab:, Sealion (todo) and Seal #102,Shrimp:shrimp:, Fly #150, Snow Rabbit (with leaves as ears), Earthworm #261Clown:clown_face: or MimeComputer Mouse:computer_mouse:, Grilled Meat kebab etc. (distinct from :meat_on_bone:), Broom #128,Sick Face:nauseated_face:,Puking Face(Unicode 10), D'oh Face (Homer Simpson) | :woman_facepalming:, Grinning Face with Angry Eyes or Face with Evil Grin or Face with Baring Teeth (cf. :smiling_imp: and :grimacing:),Rolling on the Floor Laughing:rofl:, Exhausted or Sighing Face (:hushed:),Drooling Face:drooling_face: #255, Drunk Face #11 #114 #253, Depressed Face #4 #253, Face with Foot in Mouth #257, Face Banging against Wall #253, Secret Telling or Whispering (shushing face in Unicode 10),Swearing Face(Unicode 10), Daydreaming #255, separate Right and Left Hug #256, Person Mooning #253 #334, Pool Party #253,Handshake:handshake:Wilted Flower:wilted_flower:,Bowl:ramen: or Unicode 10, Plate (:plate_with_cutlery: without cutlery), Bandit #298 #253,Clown:clown_face:,Cowboy:cowboy_hat_face:, Ninja #5 #253, Pirate #339 #148 #255,Bat:bat:, Squirrel #108 #253Emojis proposed but not adopted by Unicode
Unicode Emoticons Quick Chart
[N3582]: http://unicode.org/L2/L2009/09025r2-emoji.pdf "Proposal for Encoding Emoji Symbols (2009-03-05)"
Proposals
[Religious Symbols]: https://docs.google.com/document/d/1u5vVIob7889KEnCozp7xXJICwq4ChT1JJSFfbXfFvTg/ "Emoji and Symbol Additions - Religious Symbols and Structures by Shervin Afshar and Roozbeh Pournader (2014-11-01)"
Standard References