Ok I'll try to organize the list by games

And I'll cross out the repeats. ? means not sure if it counts.
Mario Party 3 (Spiny Desert)
- Boo
- Pokey
- Chain Chomp
Mario Party 6 (Thirsty Gulch)
- Klepto
- Piranha Plant
- Goomba
Mario Party 7 (Pyramid Park)
-
Chain Chomp
- Red Chomp?
- Monty Mole
- Bandit
- Bowser?
- Koopa Kid?
- The alligators that somewhat resemble Klaptraps?
Mario Party Advance (The Desert Quests)
-
Klepto
- Hammer Bro.
- Bullet Bill
-
Pokey
- Kamek
Paper Mario (Chapter 2) (Is Mt. Rugged considered a Desert area?

)
- Parakarry
- Buzzar
- Kolorado
- Moustafa
- Tutankoopa
- Mamar
-
Chain Chomp
-
Monty Mole
- Cleft
- Whacka
- Bandit
-
Pokey
- Tweester
- Buzzy Beetle
- Pokey Mummy/Poison Pokey
- Stone Chomp?
- Swooper
Super Paper Mario (Chapter 1-3 and 1-4)
- Bald Cleft
- Boomboxer
- Cherbil
- Goomba
- Ice Cherbil
- Jawbus
- Megabite
- O'Chunks
- Spiky Goomba
- Squig
- Squiglet
-
Buzzy Beetle
- Frackle
- Fracktail
- Spiky Tromp
Super Mario Bros. 3 (World 2)
- Boomerang Bro
- Fire Bro
- Fire Snake
- Angry Sun
-
Tweester
- Pile Driver Micro Goomba
- Cheep Cheep (I guess it'd count then

)
- Venus Fire Traps/Fire Piranha
- Thwomp
-
Boo
- Dry Bones
- Boom Boom
- Paratroopas
-
Chain Chomp
-
Buzzy Beetle
-
Bullet Bill
- Morton Koopa
- Rocky Wrench
- Cannonballs?
New Super Mario Bros. (World 2)
- Spiny
- Lakitu
- Blockhoppers
- Spike Bass
- Bill Blasters
- Spiked Balls?
- Giant Spiked Balls?
- Super Piranha Plants
- Mummipokey?
-
Hammer Bro, Pokey, Swooper, Bullet Bill, Fire Snake, Venus Fire Trap/Fire Piranha (I should've crossed out the repeats this way earlier

)
Mario & Luigi: Superstar Saga (Teehee Valley)
- Gritty Goomba
- Spiky Snifit
Mario & Luigi: Partners in Time (Gritzy Desert, though I'm not sure if Gritzy Caves and the Koopaseum count

)
- Bob-Omb
- Shrooba Diver
- Petey Piranha
- Shrooboid Brat
- Dark Boo
- Elite Boom Guy
- Snifaro
- Kylie Koopa?
- Peach?
Mario Kart DS (Desert Hills)
Just repeats.
Mario Kart: Double Dash (Dry Dry Desert)
Repeats, again.
Can someone else do the other games I mentioned similar to this format? It'd really help
