Jagged Pass: 3 species in 3 games

3 species, 5 versions

RubySapphireEmeraldOmega Ruby and Alpha Sapphire

Ruby: 3 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Machop	18 to 20	25%	All places
Numel	18 to 20	55%	All places
Spoink	18 to 20	20%	All places

Sapphire: 3 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Machop	20 to 22	25%	All places
Numel	20 to 22	55%	All places
Spoink	20 to 22	20%	All places

Emerald: 3 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Machop	20 to 22	25%	All places
Numel	20 to 22	55%	All places
Spoink	20 to 22	20%	All places

Omega Ruby and Alpha Sapphire: 2 species, all by encountering 5 pokemon within grass, flowers, or within a cave
Species	Levels	Chance	Game page
Machop	10	65%	All places
Spoink	10	35%	All places