Do all the investors in each of groups 2, 3, and 4 get the same amount, or does the amount that they get based on how much BTC they gave vs how much is total in each group. I would assume it's based on how much they gave vs the total but I didn't see that clearly stated (or at least I missed it)
It will be propotional. You can always check the spreadsheet to see howmuch 1 satoshi in each category will give you. Please note that no single person can get more than 100 Million NFD. So you may need to invest tactically
https://docs.zoho.com/sheet/published.do?rid=josmj3c28ae23100d44d285bad0da6fcd08c9&mode=html