You were not asking me but I am chimming in her HD.
Don't know if I would call it a pattern. But like your wife I prefer woman singers. Pull out Janice add Cher and Pat Benatar you got my list. I do like some C&W mainly female with a little Garth and Toby Keith added in. And I dislike jazz and all musicals with the exception of Grease I find that one amusing. Though I could probabaly recant every song from the musical Peter Pan since my S10 watched it repeatedly as a toddler. lol
And alot of those female singers on that list do have a common trait.