User tmob 

tmob  posted 1200 waymarks in 928 different categories within 86 countries and 144 regions, of these were 703 posted-first-in-region and also 357 posted-first-in-country.
Unfortunatly the user also has 9 waymarks with a missing region in the database.

Here is a list of categories, that tmob currently has not posted in.

Category name
1866 Austro-Prussian War  Memorials 1866 Austro-Prussian War Memorials
Abandoned Air Force Radar Sites Abandoned Air Force Radar Sites
Alabama Historical Markers Alabama Historical Markers
Alaska Historic Markers Alaska Historic Markers
Alberta Heritage Markers Alberta Heritage Markers
AMVETS AMVETS
Angel of Hope Statues Angel of Hope Statues
ANWB Paddenstoelen ANWB Paddenstoelen
Appalachian Trail Appalachian Trail
Arizona Historical Markers Arizona Historical Markers
Arkansas Historical Markers Arkansas Historical Markers
Art*o*mats Art*o*mats
Atlantic Canada Heritage Properties Atlantic Canada Heritage Properties
Australian Trig Points Australian Trig Points
Automobile Association Signs Automobile Association Signs
Azimuth Benchmarks Azimuth Benchmarks
Barns Barns
Bartram Trail Historical Markers Bartram Trail Historical Markers
Bat Boxes Bat Boxes
Benjamin Franklin Benjamin Franklin
Bismarck Towers Bismarck Towers
Bloggers Bloggers
Blue Star Memorial Highway Markers Blue Star Memorial Highway Markers
Bobsleigh Chutes and Mountain Slides Bobsleigh Chutes and Mountain Slides
British Columbia Heritage Markers British Columbia Heritage Markers
Burger Chef (Former Locations) Burger Chef (Former Locations)
Butterfield Overland Despatch Markers Butterfield Overland Despatch Markers
California Historical Markers California Historical Markers
Californian Bells of El Camino Real Californian Bells of El Camino Real
Canada Post Offices Canada Post Offices
Canadian Benchmarks Canadian Benchmarks
Canadian Legion Memorials Cairns and Cenotaphs Canadian Legion Memorials Cairns and Cenotaphs
Canadian National Historic Sites Canadian National Historic Sites
Civilian Conservation Corps Civilian Conservation Corps
Closed Drive-In Theatres Closed Drive-In Theatres
College Football Stadiums College Football Stadiums
Colorado Historical Markers Colorado Historical Markers
Confluence Spots Confluence Spots
Connecticut Historical Markers Connecticut Historical Markers
Covered Wagons Covered Wagons
Cracker Barrel Restaurants Cracker Barrel Restaurants
Cross Country Ski Trailheads Cross Country Ski Trailheads
D.U.P. Historic Markers D.U.P. Historic Markers
Daniel Boone Trail Markers Daniel Boone Trail Markers
Danish Benchmarks Danish Benchmarks
Delaware Historical Markers Delaware Historical Markers
Disc Golf Courses Disc Golf Courses
Disneyland/DCA Benchmarks Disneyland/DCA Benchmarks
Dixie Highway Dixie Highway
Drawing Waymarks Drawing Waymarks
Drive-In Movie Theaters Drive-In Movie Theaters
E Clampus Vitus Historical Markers E Clampus Vitus Historical Markers
Eagle Scout Project Sites Eagle Scout Project Sites
Electric Palm Trees Electric Palm Trees
Elks Lodges Elks Lodges
Entertainment Awards Entertainment Awards
Florida Historical Markers Florida Historical Markers
Frank Lloyd Wright Designed Buildings Frank Lloyd Wright Designed Buildings
Fraternal Order of Eagles Fraternal Order of Eagles
Funerary Art Funerary Art
German Benchmarks German Benchmarks
German Trigonometric Points German Trigonometric Points
Giant 24 h Vending Machines Giant 24 h Vending Machines
Girl Scout Gold Award Project Sites Girl Scout Gold Award Project Sites
Glacial Lake Missoula Flood Features Glacial Lake Missoula Flood Features
GPS Tracklog Art GPS Tracklog Art
Grange Halls Grange Halls
Greenwich Meridian Markers Greenwich Meridian Markers
Habitat ReStores Habitat ReStores
Hawaiian Historical Markers Hawaiian Historical Markers
Highway Giants -  Muffler Men Highway Giants - Muffler Men
Histoire du Quebec (Quebec Historical Markers) Histoire du Quebec (Quebec Historical Markers)
Hot Rod Hangouts and Car Shows Hot Rod Hangouts and Car Shows
Howard Johnson's Howard Johnson's
Humming Stones Humming Stones
Ice Age Trail Ice Age Trail
Idaho Historical Markers Idaho Historical Markers
Illinois Historical Markers Illinois Historical Markers
Improved Order of Red Men Improved Order of Red Men
Indiana Historical Markers Indiana Historical Markers
Inline Hockey Rinks Inline Hockey Rinks
International Space Station Sightings International Space Station Sightings
Iowa Historical Markers Iowa Historical Markers
Iron Furnace Ruins Iron Furnace Ruins
Jack In The Box Jack In The Box
Jimmy Buffett Jimmy Buffett
Kansas Historical Markers Kansas Historical Markers
Kentucky Historical Markers Kentucky Historical Markers
Kissmobile and Co. Sightings Kissmobile and Co. Sightings
Knights of Pythias Knights of Pythias
Kokopelli Sightings Kokopelli Sightings
Korean Historic Sites Korean Historic Sites
Kroger Supermarkets Kroger Supermarkets
LDS Church History Sites LDS Church History Sites
Lewis and Clark Trail Lewis and Clark Trail
Lighthouse Bed and Breakfasts Lighthouse Bed and Breakfasts
Lincoln Highway Lincoln Highway
Lincoln Highway Markers Lincoln Highway Markers
Little Free Pantry Little Free Pantry
London Coal Tax Posts London Coal Tax Posts
Louisiana Historical Markers Louisiana Historical Markers
Luftwaffe Radar Ruins Luftwaffe Radar Ruins
Lustron Homes Lustron Homes
Maine Historical Markers Maine Historical Markers
Manitoba Historical Markers Manitoba Historical Markers
'Marry Me' Markers 'Marry Me' Markers
Maryland Historical Markers Maryland Historical Markers
Medal Of Honor Resting Places Medal Of Honor Resting Places
Metal Detecting Metal Detecting
Michigan Centennial Farms Michigan Centennial Farms
Michigan Historical Markers Michigan Historical Markers
Millennium Trees Millennium Trees
Minnesota Historical Markers Minnesota Historical Markers
Mississippi Historical Markers Mississippi Historical Markers
Missouri Historical Markers Missouri Historical Markers
Mold-a-Rama Machines Mold-a-Rama Machines
Mom and Pop Rock Shops Mom and Pop Rock Shops
Montana Historical Markers Montana Historical Markers
Moon Trees Moon Trees
Moose Lodges and Centers Moose Lodges and Centers
Movie Theater Meals Movie Theater Meals
National Wild and Scenic Rivers National Wild and Scenic Rivers
Nations Within Nations Nations Within Nations
Native American Trail Trees Native American Trail Trees
Nebraska Historical Markers Nebraska Historical Markers
Nevada Historical Markers Nevada Historical Markers
New Hampshire Historical Markers New Hampshire Historical Markers
New Mexico Historical Markers New Mexico Historical Markers
Nike Missile Sites Nike Missile Sites
Norske postkontor (Norwegian Post Offices) Norske postkontor (Norwegian Post Offices)
North Carolina Historical Markers North Carolina Historical Markers
North Country Trail North Country Trail
North Dakota Historical Markers North Dakota Historical Markers
Occupational/Hobby Grave Stones Occupational/Hobby Grave Stones
Odd Fellow Lodges Odd Fellow Lodges
Ohio Historical Markers Ohio Historical Markers
Oklahoma Historical Markers Oklahoma Historical Markers
Old Spanish Trail Auto Route Old Spanish Trail Auto Route
Olmsted Designed Parks Olmsted Designed Parks
Ontario Heritage Properties Ontario Heritage Properties
Ontario Provincial Plaques Ontario Provincial Plaques
Oregon Historical Markers Oregon Historical Markers
Outdoor Wind Harps Outdoor Wind Harps
Painted Barn Quilts Painted Barn Quilts
Pancake and crepe restaurants Pancake and crepe restaurants
Pennsylvania Historical Markers Pennsylvania Historical Markers
Persian Gulf War Memorials Persian Gulf War Memorials
Pet Cemeteries Pet Cemeteries
Pony Express Monuments Pony Express Monuments
Publix Supermarkets Publix Supermarkets
Remembering FEPOW Remembering FEPOW
Rock-Hounding Rock-Hounding
Rolling Ball Sculpture Rolling Ball Sculpture
Route 66 - The Mother Road Route 66 - The Mother Road
Runestones Worldwide Runestones Worldwide
Safe Place Havens Safe Place Havens
Saskatchewan Historical Markers Saskatchewan Historical Markers
Shot Towers Shot Towers
Smokey Bear Sign Sightings Smokey Bear Sign Sightings
Sonic Drive In Restaurants Sonic Drive In Restaurants
South Carolina Historical Markers South Carolina Historical Markers
South Dakota Historical Markers South Dakota Historical Markers
Southern African Trig Beacons Southern African Trig Beacons
State Park Passport Locations State Park Passport Locations
Summit Registers Summit Registers
Super Fund Sites Super Fund Sites
Taffy Pulling Machines Taffy Pulling Machines
Target Stores Target Stores
Tennessee Historical Markers Tennessee Historical Markers
Texas Historical Markers Texas Historical Markers
The Great Florida Birding Trail The Great Florida Birding Trail
Town and Village Pounds Town and Village Pounds
Toynbee Tiles Toynbee Tiles
Trail of Tears Trail of Tears
Train Cabooses Train Cabooses
Turtle Crossings Turtle Crossings
U-Haul SuperGraphics U-Haul SuperGraphics
U.S. 40 - The National Road U.S. 40 - The National Road
U.S. National Natural Landmarks U.S. National Natural Landmarks
U.S. Route 99 - The Pacific Highway U.S. Route 99 - The Pacific Highway
Underground Railroad Sites Underground Railroad Sites
Utah Historical Markers Utah Historical Markers
Vermont Historical Markers Vermont Historical Markers
Vintage Gas Stations Vintage Gas Stations
Viquesney's Spirit of the Doughboy Statues Viquesney's Spirit of the Doughboy Statues
Virginia Historical Markers Virginia Historical Markers
Vortexes, Mystery Spots, and Gravity Hills Vortexes, Mystery Spots, and Gravity Hills
Wagon Roads and Trails Wagon Roads and Trails
Walt Disney World Benchmarks Walt Disney World Benchmarks
Washington Historical Markers Washington Historical Markers
Watershed Markers and Monuments Watershed Markers and Monuments
Waymark Sticker and Pin Seekers Waymark Sticker and Pin Seekers
Wee Folk Fairy Doors Wee Folk Fairy Doors
West Virginia Historical Markers West Virginia Historical Markers
Western Canadian Heritage Western Canadian Heritage
Where's In A Name? Where's In A Name?
Whispering Giant Sculptures Whispering Giant Sculptures
Wisconsin Historical Markers Wisconsin Historical Markers
Woman's Clubs Woman's Clubs
Woodmen of the World Grave Markers/Monuments Woodmen of the World Grave Markers/Monuments
Wyoming Historical Markers Wyoming Historical Markers
Zinc Headstones Zinc Headstones