https://amazon.com/Super-Powereds-Year-Drew-Hayes-ebook/dp/B00BIJ05F2
Really liked this finished series and its spin off novels. Superheroes in this universe are licensed by the government and attend a university which has a very strict graduation ceremony, most never make it through and become actual superheroes. There is also a larger class of people who have powers but can’t control it, along with the villians.
My favorite. Superheroes in a very dark, damaged world that stumbles from one catastrophe to another. See QT3 thread here. As mentioned this is not a book, it’s like 11 full novels if you split it out.
Brandon Sanderson’s the Reckoners is like most of his work, good stuff. Most if not all superheroes in this series are flat out evil.
Will have to check out Superhuman next.