I've had a quick flick through this thread and nobody yet appears to have noted that at least 3 of the regular stanzas appeared on various Scottish broadsides of the 18thc century.
Rock and reel
Dye petticoats
Sad I sit on yonders hill
and should perhaps be considered as commonplaces/floaters. I f I remember rightly the last one is a commonplace even in Child ballads.