The key difference is when the drawdown floor updates.
EOD trailing drawdown
Used on EOD, 1-Day-Pass-Plan, Flex and Instant Lite accounts, and on Daily Payouts during the evaluation.
The drawdown floor only updates at the end of each trading day, based on your closing balance. Intraday equity swings do not affect your drawdown level.
For example, if your account peaks at $52,000 during the session but closes at $50,500, the drawdown floor adjusts based on $50,500 only.
Intraday trailing drawdown
Used on Instant Classic accounts and on Daily Payouts funded accounts.
The drawdown floor updates in real time as your equity reaches new highs, including unrealised profits on open positions. If your equity hits $52,000 even momentarily, the drawdown floor adjusts immediately and never moves back down.
Daily Payouts uses both
The evaluation runs end of day trailing, and the funded account switches to intraday trailing on your highest equity. See the Daily Payouts drawdown article for what changes when you get funded.