Looking for DRM-free book recommendations

I recently switched over my reading platform from Kobo to BookFusion. BookFusion lets you upload your own ebook files and sync them between devices, so I spent a lot of time de-DRMing my Kobo library and porting it over, as well as adding in some old de-DRMed books from my old Kindle.

For "traditional" titles I plan on still buying them on Kobo and then just stripping the DRM and transferring them over, but I also know there's an entire internet out there full of non-traditional publishing:

• Authors who sell their ebooks directly to consumers (e.g. Cory Doctorow)
• Publishers who sell ebooks directly to consumers (e.g. Boss Fight Books, Topatoco)
• Ebook bundle sites (e.g. StoryBundle)
• Public domain works (e.g. Project Gutenberg, Standard Ebooks)
• Assorted other stuff that doesn't really fit a simple category (e.g. this Planescape: Torment novelization)

I'm interested in adding some of these to my library, given that it feels like the "spirit" of BookFusion is to bring your own organic grassfed files, rather than glom them off of a DRMed service like I have been doing.

The hard part is that discoverability for stuff like this is really tough, since they're sort of just scattered across the internet. Furthermore, when I do tend to find stuff, I tend to find entire catalogs rather than individual titles. It's hard to know what's worth diving into from entire collections. That's why I'm hoping people can help me out by pointing me in the direction of specific stuff that they've loved!

With regards to recommendations, I want to leave the topic open to anything and everything. I don't want to limit this topic to just my tastes, in case other people find it useful.

If people do want to tailor some recommendations to me though, I tend to love sci-fi, nonfiction, LGBTQ stuff, videogame-related books, and comics/graphic novels (but only if the series are completed).

Important note: I am NOT looking for pirated books. I'm happy to pay for books I'm interested in, especially if they're supporting independent authors/publishers or online hobbyists.