Those would be fairly simple to sculpt & add on articulated limbs (or even just sculpt on top of one of the existing poseables) and pump out in either a resin printer or an FDM printer setup for miniature details.
Probably wouldn't cost more than a buck for the FDM or maybe $10-$15 for the siraya resin (pricier stuff for non-brittle sculpts) and a few bucks more in acrylics.
I mean the detailing isn't much beyond the face, shirts and belts while the colours are just grey, black, white, flesh, hair colours, varnish for the shoes and some highlights.
Most of the work would go into the sculpting. (well and the painting if you're new to it)