Mostly webcomics and a few Dreamwidth pages.

I also recommend them, they are great. Some things that i especially like is the connection between the two main characters, the books giving you a very believable idea on how dragon-based warfare could work and showing different ways various cultures interact with dragons. While the major european powers mostly stick to the air force part mentioned in my earlier comment and generally don’t interact with people outside the military much, china for example has dragons more integrated into society and holding a wider variety of jobs. Book 4 showed a lot about dragons in southern africa, though i won’t spoil the specifics.

I have completed book 4 since my previous comment and am now deep into book 5.

I am currently about halfway through the fourth book of the Temeraire series by Naomi Novik. A sort of historical fantasy set in a version of the Napoleonic wars in a world with dragons, which are used by the nations of that world as a sort of airforce. This one in particular is about a disease threatening the british dragons and the search for a cure.

The Remaster Champion is in Player Core 2, which is listed as available on their website, but hasn’t been updated on Archive of Nethys. I don’t have the book myself, but according to a blogpost (https://paizo.com/community/blog/v5748dyo6uib0?Player-Core-2-Preview-The-Champion-Remastered) about it they said they still have causes, they are just not bound to alignment anymore.

Something else that also has space Romans is Ultima by Stephen Baxter. Much of it takes place in an alternate timeline where the Roman empire still exists in the 2220s.