So are they the people Bush wanted to help defeat Al-Qaida in Iraq?
Do they hate the Muslim Brotherhood in Egypt?
TO your first question, no. What we have always called "Al Qaeda is Iraq" was always ISIS, the media just affiliated any extremist movement with Al Qaeda. Bush supported people who were fighting ISIS.
TO your second question, yes. ISIS hates anybody that is not a part of ISIS, as I said before this even includes Al Qaeda.
The reason for this is because ISIS considers itself to be the next caliphate, and anybody who is against the caliphate or not a part of the caliphate is therefore against Islam and not really a muslim