Any attempt to remake that latest pattern at pixel-level, 1-1, is basically gonna result in noise. Maybe that works for you, maybe not, but it probably doesn't because it's hella uniform and single-pixel noise doesn't afford much space for texture at that resolution.
Notice how many top-down RPGS with better pixel art chose to render out simple patterns, leaves, a few blades instead of every blade of grass and tiling it. (I'll pull up a couple examples later today)
Less is more... IMO that can be crucial to the pixel medium.
I would blow up the small details a little, E.G. make the white flecks in the brown tiles larger groups of pixels.
Also play up whatever else you can to make these tiles distinguished, like the tile borders, and make a couple variations...
Of course how you handle this specifically comes down to style.
But make sure in the end it's played down and looks walkable.
Will c+c your current floors soon. Peace.
