Still researching those and some other questionable entries.
Not all pins have been themed at IPDB.

Here's a quick digest of all the themes that are currently in use at IPDB.
1980's Party Theme, 21 or Bust, Activities, Adult, Adult Nightlife, Adventure, Affluence, African Jungle, Agriculture, Air Racing, Aircraft, Airplane Racing, Airplanes, Airports, Aliens, America, American 1890's, American Bicentennial, American Football, American History, American Patriotism, American Places, American West, Amusement Park, Animals, Animated, Antiques, Apocalyptic, Aquatic Fun, Aquatic Parks, Arcade Games, Archery, Arctic Culture, Art Deco, Astrology, Astronauts, Athletics, Auto Racing, Automobile Travel, Automobiles, Aviary, Aviation, Ballet, Bank Robbery, Baseball, Basketball, Battle, Beaches, Beatniks, Beauty Pageant, Bicycle Racing, Bicycling, Billiards, Bingo, Birds, Black Magic, Blackjack, Board Game, Boat Racing, Boating, Boats, Bobsledding, Body Building, Bowling, Boxing, Broadway, Bullfighting, Business, Camp Humor, Camping, Canadian West, Canasta, Car Culture, Car Rallies, Cards, Carnality, Carnival, Caroling, Cars, Cartoons, Casino, Castles, Cavalry, Celebration, Celebrities, Centennial Celebration, Chariot Racing, Checkers, Chess, Children's Games, Circus, City Buildings, City Living, City Scene, City Skyline, Clowns, College, Combat, Comedy, Comics, Commemorative, Competition, Confederate American South, Conspiracy, Cops, Cops and Robbers, Country and Western, Craps, Cricket, Crime, Crime Investigation, Croquet, Curling, Cyclones, Damnation, Dancing, Darts, Deep Sea, Demolition Derby, Dice, Dinosaurs, Disaster, Disco, Disney, Dog Racing, Dogs, Dolphins, Dominoes, Dracula, Drag Queens, Drag Racing, Dragons, Drinking, Drive-In Movies, Driving, Earthquake, Easter, Ecdysiast Entertainment, Education, Egyptology, Elvis, Entertainment, Environment, Equestrian, Ethnic Groups, European Football (i.e. U.S. Soccer), European History, Evolution, Exercise, Fair, Family, Family Vacation, Fantasy, Fantasy and Myth, Farming, Fashion, Fashion Show, Feline Mischief, Ferris Wheels, Festivities, Fiction, Fictional, Fictional Characters, Fireworks, Fishing, Fitness, Flamenco Dancing, Flower Power, Flying, Food, Football, Foreign, Foreign Peoples, Fox Hunting, Friendship, Frontier, Fun, Fun Park, Futbol, Futuristic, Gambling, Games, Ghosts, Girls, Glamour, Go-Kart Racing, Golf, Golfing, Government, Great Depression, Greek Mythology, Guns, Hang Gliding, Happiness, Happiness, Circus, Hard Hat Diving, Harem, Haunted, Haunted Cemetery, Hawaii, Hell, High Diving, High School, Hillbillies, Historical, Historical Characters, Historical People, History, History Timeline, Hockey, Hollywood Actresses, Hollywood Glamour, Hollywood Monsters, Horoscope, Horror, Horse Racing, Horse Shows, Horses, Horseshoes, Hot Air Ballooning, Hot Rods, Human Physiology, Humor, Hunting, Ice Hockey, Ice Sailing, Ice Skating, Industry Inside Jokes, Insects, Irish Folklore, Jai Alai, Jazz, Jousting, Jungle, Juvenalia, Kabuki, Kickboxing, Knights, Landmarks, Law, Law Enforcement, Leisure, Leisure Activities, Licensed Theme, Lighthouses, Literature, Livestock, Love, Magic, Majorettes, Marching Band, Marine, Marines, Martial Arts, Martians, Medical, Medieval, Mermaids, Mexico, Military, Military Aircraft, Military Folklore, Mobsters, Modeling, Money, Monster Truck Rally, Motocross, Motorcycles, Mountain Climbing, Movie, Movie Making, Movie Stars, Movies, Murder Mystery, Music, Musical, Mystic, Myth and Legend, Mythology, NASCAR, National Flags, Native Americans, Native Americans Playing Cards, Native Americans and Culture, Nature, Nautical, Naval, Naval Warfare, Naval- Navy, Nightclubs, Nightlife, Ninja Fighting, Nordic, Norse God of Lightning, Norse History, Norse Mythology, Nostalgia, Nudity, Nursery Rhyme, Occult, Ocean Liners, Oil Drilling and Exploration, Oil Exploration, Oil Wells, Olympic Competition, Olympic Games, Olympic Sports, Olympics, Op Art, Operetta, Other, Outdoor Activities, Outdoors, Outer Space, Outer Space Fantasy, Pageantry, Parachuting, Parades, Parasailing, Patriotic, Patriotism, Payout, Pelota, People, Pets, Photography, Pinball, Pirates, Playing Cards, Playing Dice, Playing Marbles, Playing Pinball, Poetry Jam, Poker, Pokerino, Police, Politics, Polo, Pool, Prehistoric, Prospecting, Psychedelic, Psychedelic Art, Puppets, Puzzles, Rabbit Hunting, Racing, Rafting, Railroads, Rap, Recreation, Relaxation, Religious, Reproduction, Riflery, Riverboats, Robots, Rodeo, Roller Coasters, Roller Derby, Roller Skating, Roman History, Roman Mythology, Romance, Romans, Running, Rural Living, Safari, Sailing, Samba, School, Science, Science Fiction, Scooters, Scuba Diving, Sharks, Ships, Shooting, Shooting Gallery, Show Business, Shuffleboard, Singing, Skateboarding, Skating, Skeletons, Skiing, Skittles, Skydiving, Slot Car Racing, Slot Machine Combinations, Slot Machines, Snow Skiing, Snow Sports, Snowmobiling, Soccer, Soccer football, Softball, Space, Space Age, Space Alien Combat, Space Aliens, Space Exploration, Space Fantasy, Space Medieval, Spaceships, Spanish Culture, Spear Fishing, Speedboat Racing, Speeding, Spies, Sport, Sports, Spy, Steeplechasing, Stock Market, Stunt motorcycles, Submarines, Superheroes, Supernatural, Surfing, Swimming, Swimming Pools, TV Game Show, TV Show, Target Practice, Tennis, Terpsichorean Entertainment, Theaters, Tic-Tac-Toe, Time Travel, Track Running, Track and Field, Traffic, Trains, Tramways, Transportation, Trapeze, Trapeze Artists, Trapping, Travel, Traveling, Treasure, Tropical, Tropics, Truck Driving, Trucking, UFOs, Underwater, United States, Vacationing, Vampires, Vaudeville, Velodrome, Viper, Viper Driving, Volcano, Volleyball, Wagon Train, Wall Street, War, Warfare, Warriors, Wartime, Water, Water Skiing, Water Sports, Weather, Western, Wild West, Wildlife, Winter, Wizards, Women, World Cultures, World History, World Places, World War I, World War II, World's Fair, Wrestling, Zodiac, Zombies, and Zoo.