Mistwell
Crusty Old Meatwad
Creature Type: Construct (Warforged) works great for that.I've said before Origins are the only term broad enough to cover stuff like Autognomes, Warforged, to other weirder things, things were biological terms don't make sense.
Origins works OK but is still a bit clunky if you started out as one thing, like Mountain Dwarf, and then transformed into another thing, like reincarnated into a halfling. Is your "Origin" really halfling? Sort of. It's the origin of what you look like right now. But it's not how your experiences originated. You may still count yourself a member of the Mountain Dwarf society and be accepted by that society as a Mountain Dwarf. Or you may join a halfling community. Or you might be an outcast from both. But describing it as your origin doesn't seem to work as well as simply describing your current creature type, with origin and heritage and ancestry information being left for a background description.