What Xbox is this.?

Left and right ones

I got as far as Xbox 360 elite, but after looking them up the solid blue one and all grayish black one on the left and right are surprisingly hard to locate just keeps popping up as black for the one on the left, but doesn’t match the color of mine. That’s why I added the black one in the middle to show the color difference. I’d appreciate it if someone can help me on the there are no model numbers.