Custom WS2812 LED Matrix

Building a custom ws2812 led matrix, from the docs there is an image of one
LED Drivers (ghielectronics.com)
there’s also some sample code which i would like to align with my display.

My question is how is that particular matrix wired?

Starts from bottom?

image

or top?

image

or not at all like this…

Also im thinking of either doing 8x8 or 8x16, how do i align them so the DrawString and other methods function out of the box?

1 → 2 → 3 → 4
5 → 6 → 7 → 8

or

1 → 2 → 3 → 4
8 ← 7 ← 6 ← 5
(this makes most sense for wiring)

or not at all like this…