Two of the inescapable ones* are from the 70s and a couple of others besides, but yes, 1990 is a significant dropping-off point.

Curiously, one Top 40 chart for Christmas songs streamed in the UK, from December 2021 has Feliz Navidad in there at 35, which is kind of funny because that’s above our own band The Darkness. Their '00s Christmas effort tried so hard to re-capture the spirit of the '70s and do well. To some extent it did but the magic wasn’t quite there. It probably didn’t help that it was based around a riff stolen wholesale from Queen’s Brian May (Somebody to Love if memory serves.)

But importantly, that chart does list several others. It’s a fairly safe bet that if you see a song, or band (or both) you’ve not heard of, it’s probably one of our home grown ones that hasn’t made it big where you are.

* 9 and 12 on the linked chart.