I built several Zombie Mob Statues at different scales. The classic zombie is available at the scales 1 pixel : 1 block, 1 pixel : 2 blocks, and 1 pixel : 3 blocks. In addition to that, I also made the Baby Zombie and the Chicken Jockey as Mob Statues at the 1 pixel : 3 blocks scale.
You can find schematics for LiteMatica and WorldEdit as well as a world save with all the statues in the download.
Feel free to download and use them however you like, but please give credit if you do :)
Check out my Mob Statue Collection for more builds like this!