Check it out and see. Major topics on top are the ones where they show all 3 leaning sides and how they slant it for their viewers.
On the bottom part of the site, you see individual articles that are from the right, center, or left. That’s where topics from one side or the other might be listed and allsides.com sometimes writes why it’s a focus of one side and if the other side is or isn’t writing about it.
I believe it’s a clever way of looking at things personally. At one point of my life, Long story short, the news affected me emotionally a lot. I cut it completely except for weather news. A few years ago I found allsides.com and that fixed that for me. So now once every few days I check the site for basic major news and I don’t get to engulfed in one particular echo chamber. Quite frankly this has kept me much happier and more sane.