I don't think I've followed the charts at all in the last 20years!
Most of my new music (and yes, most are bands/groups) have come from listening to stations like planet rock, or from falling down a rabbit hole on YouTube. Either that, or when I have to learn new songs from artists/bands/groups that I've not heard of it never listened to before.
I've also got a couple of classical CDs in the car of the 1812 overture, and The Four Seasons........