Alternative approach to the following workflow: https://openart.ai/workflows/tortoise_growling_64/xy-grid-of-any-complexity-with-0246-nodes/AkBEVHq6Uw44hsjimtzI .

Fewer nodes, but less explicit; you must be mindful of the order and understand the exact output of the "Lists Cartesian Product" node. Swapping the inputs/outputs will generate a different grid!

Rows go into i1 (input 1) and columns into i2 (input 2); o1 outputs data from i1, and o2 from i2.