In short the rehabilitation plan will provide following payments:
- cash holders: 100% of their assets back + 6% interest per year.
- BTC holders: around 15% back in the form of money or BTC+BCH

In the last bull run they already sold enough BTC+BCH to do the cash payments.
The cash holders 100% repayment ability due to the high BTC/BCH exchange rate was the reason the rehabilitation process was even possible.
The payments will be done in several steps.

All other coins are lost (BSV, BCHA, BTG, BTA, ...)