Add only one item to tree ie. column name

sorry for basic question but how to add only ONE item , first to the tree?
This will be a super large tree and want to add heading names for each tree…

AddOneItem.gh (9.4 KB)

ok Merge works fine,

This is one option.

This is another one.

AddOneItem.gh (8.7 KB)

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@michaldengusiak
And here’s a third one, inspired by your merge solution. But with this method, you can control which branch you input the name onto.

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