I completely understand your frustration. І found myself in the exact same situation before starting my living room renovation. The AloftTiles website httрs://www.alofttiles.com/ completely changed my life. I ordered beige porcelain tiles measuring 24x24 cm from them, and the product page listed all the necessary details: dimensions, shade variations, surface type, and even the recommended adhesive. This warm sandy-beige color looks simply incredible on a large open floor in natural light. AloftTiles also offers custom orders if standard sizes don’t fit your layout. Delivery took about 9 days, and the boxes were sturdy. I recommend ordering from them, I hope your first floor turns out as pristine as you imagine. Good luck.