Here are the possible solutions for they have brand names often clue
Answer
Clue
Relevancy
ranches
Clue
They have brand names, often
Definition
RANCH, to work at an establishment for raising livestock
pandas
Clue
They often have repetitive names
Definition
PANDA, (Nepali) a raccoon-like animal of the Himalayas; a similar but much larger bearlike animal of Tibet and China
popes
Clue
They often have Roman numerals in their names
Definition
POPE, a small freshwater fish, aka ruffe
escooters
Clue
Modern urban vehicles whose brand names have been parked in the middle of the three theme entries
newt
Clue
Gingrich who said "females have biological problems staying in a ditch for thirty days because they get infections and they don't have upper body strength"
Definition
a tailed amphibian of the salamander family, also EWT