The first thing you have to understand is that not all list level permutations are possible within a defined list structure. Node inputs tend to require specific structures. Even though they can “automatically” adapt to other structures in many cases, there is an underlying requirement in how inputs should align.
In many cases it’s necessary to adjust one or more inputs (usually by repeating values) to align with the intended structure.
You can also use replication guides within code blocks to further specify how list structure should be handled when iterating multiple inputs.
