Beowulf was somewhere between 700 and 1000, so that’s Old English.
Shakespeare lived from 1564 to 1616, so he used Early Modern English.
The King James Bible is from 1611 and it’s counted as Early Modern English.
And the Epic of Gilgamesh was written between 2100-1200 BC in Mesopotamia which is on a different continent than England (today it’s mostly Syria and Iraq).