Pretty sure the general attitude toward .world is that the users tend to be liberals, especially those who came from Reddit during the API fiasco. Generally people who mean well but probably haven't engaged with the Linux, FOSS, Privacy, Anarchist, Socialist, or Communist communities before coming to Lemmy.

.ml itself is generally more leftist, a common misconception is that there are only Marxist-Leninists on .ml, when there are tons of Anarchists and Socialists as well, just much fewer liberals.

Where Hexbear is a big-tent "dirt bag left" server, and lemmygrad is an explicitly Marxist-Leninist-Maoist server, .ml is actually just focused on FOSS and privacy, and as such tends to attract more leftists than .world.

An example of the differences between .world and .ml I have noticed are on the recent death sentence for the KyoAni mass murderer posts. On the .world version, most seemed celebratory of the death sentence, while on .ml most were deeply saddened by the event but held the belief that the death penalty is wrong fundamentally, and that instead it should've been life in prison.

Just my 2 cents as a .ml user.