I mentioned Kerberos Club in another thread: Dungeons & Dragons 2024 PHB - #39 by Hoopy_Frood
It’s Victorian England setting with magic and minor steampunk. The general gist is that the magic (known as “the Strange”) is leaking into the world, and the Kerberos Club are one of the few organizations aware of it (at least in the beginning). Every member of the club is themselves touched by the Strange, which is also the source of all Fey. And like tradition, Fey are dicks. The Kerberos Club are arguably the good guys, but morality can be a bit squishy for them. (Victoria becomes a patron of them.)
https://arcdream.com/home/2011/04/introduction-to-the-kerberos-club/
Other systems that might be worth checking out as well:
Fading Suns (space opera where technology can go from stone-age to advanced computers and electronics depending on what planets are involved).
https://holistic-design.com/fading-suns/
Demon Hunters (tongue-in-cheek good vs. evil setting created by Dead Gentleman Productions; originally used Cortex system back in the day, now uses FATE)
https://demonhuntersrpg.com/