the people are from Arteria 3D's Victorian people (I.E. https://arteria3d.myshopify.com/collections/f-u-s-e/products/victorian-gent) moved from Fuse to Maximo and then back to Unreal.
I talked with the owner of this site and he was considering making a horse & buggie from Victorian or Edwardian era. That would really rock.