Prop firm drawdown types are the three ways firms measure the same loss limit: static (fixed to your starting balance), trailing (following your equity peak), and end-of-day (trailing, but only updated at the daily close). The type changes the difficulty more than the percentage does.
Static never moves: a 10% floor on $100,000 sits at $90,000 for the life of the account. Trailing follows you up: hit $110,000 and the floor rises to $99,000, so yesterday's profit becomes today's tighter leash. End-of-day trailing is the compromise - intraday spikes above the old high do not count until the close locks them in, which is why futures firms favour it.
Worked example: you spike to $112,000 intraday then close at $101,000. Under tick-by-tick trailing your floor is now $100,800. Under EOD trailing it is $90,900. Same trading, different survival.
The full comparison: static vs trailing drawdown; the EOD variant: end-of-day drawdown; the baseline term: drawdown.
Plain-language material on leveraged-trading risk is maintained by the ESMA investor corner.
Part of the rules & drawdown cluster and the full prop firm glossary.