Better photo of tiles and cabinet color

You need something very plain, with no varitation, in a light color taken from the countertop. I'd choose the main floor tile to coordinate with the countertop, vanity and wall shower tile. After you've decided on the main floor you can see if it works with the shower floor tile. Or maybe use the shower floor tile over all your floors if you don't mind that much grout.

I would use the shower floor tiles for the rest of the bathroom floor for a cohesive look.

It is important in a bathroom for the flooring to be non-slippery.....both for the shower and the bathroom floor itself. A small-to-medium-sized textured tile with sanded grout gives the best traction for wet or dry bare feet. I suggest 1” mosaic tile for the shower floor and matching tile in a larger size for the bathroom floor and any wall tile.

Use the marble hexagon on the main floor and shower floor. Or find that same style and color in the next size up (still hexagon) for the main floor. Do not add another element. What does the teal tile look like?