A mix of people of different ages, races, genders and ideologies is an example of a motley mix.
A motley collection of students at the coffee shop.
A motley tunic.
A motley group.
A motley fool.
Origin of motley
- Middle English motlei variegated cloth, variegated probably from Anglo-Norman probably from Middle English mot speck mote1
From American Heritage Dictionary of the English Language, 5th Edition