Where can I find a list of all the nxt accounts that were the initial 72 seeders? I want to find out to see how many of these accounts have moved their funds and dispersed it to the public.
All 73 initial stakeholder accounts are included in the genesis block of the blockchain.
You could write a script to extract the detailed information you are looking for from the block chain, using the NXT API. However, even if you follow the money trail, there is no way to know who owns the destination accounts -- some may be owned by the original stakeholders.
Perhaps a more useful study is to analyze the blockchain to determine the amount of NXT concentrated in large accounts vs. small accounts. This has been done in a graph here. Notice that much distribution took place during the first month or two and continues at a slower pace since then. You can click along the horizontal axis to remove selected bands in the graph.