I mostly listen to music from my parents' youth. Growing up I listened to the oldies station a whole lot (Oldies 98.1 used to be so good!). I'm Gen X, they're boomers. So classic rock is definitely in the mix, but also artists like Petula Clark, the Supremes, Tommy James and the Shondells, etc. There's a great station on SiriusXM called '60s Gold that I listen to pretty much every day.
And then when I need a change, I switch to New Wave / post-punk or Grunge.