Kind of late to this, but the “The Lost Tapes” series is one I recently finished. It is a 3 part series with custom sprites and characters. It’s based on the alpha version of Midnight Animal, as said in the description of it. Another one I liked was the “Cold War” trilogy,which follows a butcher who wears a polar bear mask. Custom story and characters, but I haven’t finished it yet.
I think my favorite series is “The Rooster Files”, which has custom music, 9 level campaign, and has Jacket has the playable character. I thought the selling point was that you play as the police as well, investigating the crime scenes that Jacket caused.