St Georges flag (England) St Andrews flag (Scotland) St Patricks flag (Ireland)
The British flag took a couple of different attempts to get to the one we know and love today, being a combination of the English, Scottish and Ireland flags (whole Island of Ireland flag not Northern or Republic)
I do not know all of them but I can tell a few for certain, for example the British flag, once the Tudor line died out the James line were next, which combined the kingdoms of England, Ireland and Scotland under the King of Scotland (James the VI of Scotland/James the I of England, Ireland and Great Britain) This will have taken you some time and i hope people like it, i would like to note though that the main flags are historically accurate for the era.