It took a while to get somewhat right, but now I can present to you some Pillager Mob Statues at a 1 pixel : 2 blocks scale. For the base statue I made two color variants: one is closer to the color in game but uses noisy blocks, the other is smoother but is also more vibrant than the in-game texture. I also added schematics for the crossbow, the ominous banner and a banner stand.
You can find schematics for LiteMatica and WorldEdit as well as a world with all statues in the download.
Feel free to download and use the statues however you like, but please give credit if you do :)
Check out my Mob Statue Collection for more builds like this!