Have you ever heard of the Merry Mushmen?
Now, I know that sounds like weird lyrics to a nursery rhyme from the 1700s, but it’s very much modern. But old-school. They’re contemporary is what I mean to say.
The Merry Mushmen publish some EXTREMELY cool RPG stuff. They have their own games but most content is very much rules-agnostic, though heavy in the D&D universe.
Their contributors, art, and layout are second to none. Take a look at their freebies, especially CRACK!
They’re absolutely worth a look.