Can I use Masonry example to implement this hierarchical stricture?

I want to implement this hierarchical structure. I tried using Masonry example, but I think it requires a large overscan which is not scalable. Because if I sequentially put the nodes in preorder (USA, WA, BEL, Foo, Bar, SEA, Foo, Bar, WA Total, ...), I need a large overscan to be able to scan USA. How can I overcome this issue? Looker's pivot table does support this virtualized hierarchical structure.

React TanStack Virtual Variable), Example | TanStack Virtual Docs

An example showing how to implement Variable), in React using TanStack Virtual.