I've seen the whole series about three times now. It's extremely liberal and is tinged with a 'both sides' point of view. The ideologies present also aren't necessarily real, but rather, how a liberal would describe what liberalism is in contrast to an autocracy in the context of international warfare. Their ideologies often come down to personal attitudes of high ranking military officials, not any kind of mass movements. Of course, it's a show centered around large military conflicts and 95% of the characters are military officers, so it's to be expected. I remember a few popular uprisings happening in the show, but they're kind of glossed over or only happen to be part of a larger plot concerning a high ranking military official's story.

A surprisingly aware part of the show is that it seems to tacitly admit that liberal democracy has all the tools in place to appoint a fascist dictatorship into power if put under the correct amount of stress.

The only realistic ideology present are the Phezzani, who are just space capitalists and want money so they engage in war profiteering and manipulation of foreign governments to make more money. Also, the Phezzani get uncomfortably close to simply being an anti-semitic conspiracy theory.

Also y'all can lay into me if you want but the series is really goddamn good and some of the best writing I've ever seen in an anime. It's good and I like it a lot. I even like the more recent adaption. I like space stuff :(