The flags.
The firdt flag is the Nigerian flag. It’s from Nigeria.
The second flag is the Andorran flag. It’s from Andorra.
The third flag is the Hungarian flag. It’s from Hungary.
The fourth flag is the Indonesian flag. It’s from Indonesia.
The fifth flag is the Egyptian flag. It’s from Egypt.
The sixth flag is the Peruvian flag. It’s from Peru.
The mystery family is the Simpson family.