LC means “Linked to Cumulative” so the stake size calculation is adjusted in proportion to the bank changing.
NLC means “Not Linked to Cumulative” so the stake size calculation is constant and does not change as the current bank balance does.
The Unit Bank size is based on its long-term average win rate which is input into the ELSx4 calculator to survive 1,000 bets without going bankrupt.
For more details on Whitaker Staking settings, see the Staking Plans Book. https://bettingsystemsguide.com/staking-plans/
The results do not surprise me anymore.
Whitaker Staking improved level stakes 4.66 unit profit massively to a 59% increase on the bank.
In the graph below we can see the profit journey for each of staking plans over 2024.
Whitaker LC and NLC are pretty similar, but NLC reduces the ups and downs slightly.