I would be interested to see, but it's fairly obvious when you visit Lemmy.world and 80% of posts are about US Electoral Politics, and the content of these posts generally is aligned with liberalism, not leftism.
Just checked: yep, lots of posts about US politics :/ So annoying. I'm on mbin, so no way to block lemmy.world, but I do block every community/magazine dedicated to US politics.
Try saying Joe Biden is complicit in Genocide when he sends more weapons to israel, and find out how many people on .world appreciate the factually correct statement.