Green’s Dictionary of Slang

(US) an insignificant person; one who has no public ‘name’.

1993		S. King Dolores Claiborne 281: I’d dish out a few names of my own startin with ‘yellowbelly’ n ‘dirty no-name sneak’.
2005		J. Stahl I, Fatty 264: The no-names who walked through the door behind [‘the biggos’].