But note there's a lot of variation. "Sheila na Guira" in the 18th century was a popular Irish tune, and I have half a dozen copies as 3/4 and half a dozen as 6/8. Also note that most 17th century 6/4 tunes and all 17th century 9/4 tunes became 6/8 and 9/8 later, the conversion being completed by about 1725-30.

5/4 are most common from southeast England, where singers tended to hold the first note of 4/4 tunes. In southeast USA they often held 1st and 3rd notes to stretch them to 6/4.