They all have the same stated religious goals, they all have roamed the globe for decades, targeting innocents in the marketplace, with impunity.
So they give themselves different “names” depending on where they live? So what.
Imagine this attitude towards the KKK back in the day, no way would a civilized people or gov look upon one group of the KKK differently than another.
No, those who try and pretend that AQ, Hamas, Hezbolla, are somehow different, don't like each other, would not work together, etc, are in their own agenda driven world.
The same world that said Saddam and Sons were innocent bystanders on the Islamic terrorist stage.
“What pray tell is the difference between all these Islamic Terrorists groups?”
The short answer is - there are no differences.
Also, my studies into these groups was not so much to determine their religious makeup and demographics but rather determine who they are and what they are up to with respect to Israel.
I have been following them now for a couple of years and have concluded that their commonalities are far more numerous than their differences.
Their common short term goal though is to wipe Israel off the face of the earth.