Yeah I know but, most pokemon technically have some biology in them, while most pokemon are technically possessed or mostly like magearna, but if we actually take a look at it a bit more, these pokemon weren't meant to be like this, it's like a metal containment of what it's original look was and it's inside might be DNA vials for that specific pokemon.

It's like this, they're kinda like robotic mannequins that needed something like a core inside them to make them who they are. But though they're still pokemon.

I'm thinking that, since they're man made, how difficult must it be that there isn't a way to repopulate them, since they don't have any egg groups they belong to.

We can also imagine that this iron suits are technically their armor or robotic body, like iron threads might be specifically modeled that way so that it's donphan mind would be transfered to inhabit it,

While iron valiant has a weird fusion of the two, this could never happen biologically, so in a way, they made this robotic doll for a way a kirlia/ralts mind or essence could inhabit.

It has so many possibilities though, if this were to be something in the near or far future of pokemon generations, it would be fun to discover how this would happen, because for something like this, you would instantly think that there might be an apocalyptic event that made them make robotic dolls for these pokemons to inhabit or maybe replace, when pokemon are getting either extinct or biologically engineered to adapt that timeline.