Populating branches with null items

Hello, I have a question about trees.

I have lists of varying lengths that I need to join, but each branch need to be the same length as the longest branch, populated with null items. I was able to do this with a bunch of nodes but was just wondering if there’s a component that does this better?

Null.gh (20.2 KB)

Thanks for your help!

Wild guess no idea if it work but maybe cross-reference with nulls?

Or some of those components of that family

not behind computer, but mhave a look at ‘compare data’ or ‘match tree’