highest for now is bitdouble.io they give 0.0001 btc on faucet it can claim every hour
but the withdrawal must 0.01 btc is too high
you can try wealthydice on moneypot they give 200 sat every 5 minutes
Pretty sure you have not visited the site (bitdouble) recently, indeed their faucet was 0.1mbtc and minimal withdraw was 10mbtc but they have decreased it since some time ago. Now the faucet is 0.025mbtc = 2500 satoshi and minimum withdraw is 2.5mbtc.
It is still high compared to other gambling site, especially the faucet is available for all players no matter new or old players.