Found this image in a listicle (which did credit the design company: https://www.anthologycreatives.com/east74th) and am in love with the tile. But, can't find anything particularly similar!
The closest I have come is this cement tile, but it's more diamond versus square spaces: https://www.cementocollection.com/products/la-balestra-cement-tile
If anyone know of something that might do the trick, I'd love to hear it!
by AtYourPublicService