I'm curious, what sort of node-link graph data is produced by the Ethereum network? I imagine there there is a graph of all transactions, and a higher level graph of miners and the blocks they mined. Are there similar emergent network datasets from other activities on the Ethereum network?

I build data visualizations, and would really like to create a force-layout network vis from some Ethereum data.

This bitcoin network vis or this citation network vis are examples of the sort of thing I'd like to create for Ethereum.