@Karnak...
Indeed, it looks like N1K1-J should be considered an independent plane... There were 1,435 N1K produced, of which 428 N1K2 and 5 N1K3... so remaining 1,002 > 1,000.
Now problem about it.
However... I really don't understand what is the buzz about. I didn't pretend the list to be 100% accurate, some stuff probably wrong and some planes should be split into sub-variants. For some it is easy to draw a line like N1K1 and N1K2, for others it is harder. For some data is ready for some you need to spend hours to collect.
I suggest:
1. You are welcome to collect the accurate data from different source (including mine) and fix it
2. You are welcome to join/unjoin models/variants as you think it is correct.
3. Present updated data to let us complain about models that your merged or planes missing.
I did in a way that was relatively easy to me, I think this data is interesting to the community weather it is 100% accurate or misleading in some aspects.
You are welcome to create your own lists - it would be interesting as well and I'll gladly look at it, discuss it.
Have a nice day.