John Gill Commentary Joshua 21:29

"Jarmuth with its suburbs, En-gannim with its suburbs; four cities." — Joshua 21:29 (ASV)

Jarmuth with her suburbs
Called Ramoth, (1 Chronicles 6:73) ; very probably the same with Remeth, (Joshua 19:21) ; Engannim with her suburbs ;
called Anem, (1 Chronicles 6:73) ; four cities ;
so many are mentioned by name.