Wow, I love your stuff, RF!! Def a Nurgle-army in the making! I have a classic GW chaos army from the 80's, but nowadays I'm more into 1st-level characters than 10th, so that's what I'm sculpting. (Thanks for your feedback in my WIP thread, btw! I'm going to take your advice about the chainmail.)
I especially like the beast in progress. How tall is it? I'm currently sticking all my excess putty onto a baluchitherium, which is 100mm high at the shoulders. Your beast is most inspiring for that project.
You asked about human zombies or monster zombies: MONSTER ZOMBIES! I love the zombie elephant you did! I'd like to see zombie-horses, zombie-trolls, and zombie-tigers, etc.
One more thing: I really appreciate the step-by-step photos you took of the muscled ogre with the flail. It's helpful for beginners like me to see how other people go about this process.
Keep them coming, dude!