I've searched high and low and there isn't much, partially because the barrier to entry to both is really high. I've been experimenting a fair bit and might start blogging about both failed and successful experiments I've run on a Cyclone V FGPA but I'm not convinced there'd be a ton of interest. That said, I do not work at a company that uses FPGAs or proprietary hardware and I believe part of the reason the field is dark is because that's just how hardware development shops have operated.