I have cited numerous sources to support this position."
No, you posted six links, five of which repeated your claim, but none of which substantiated, by reference to actual Founders' words, that "domestic insurrections" referred to slave revolts.
So we must conclude that is a modern opinion only, perhaps shared by many, but not substantiated by anyone at the time.
jeffersondem: "The full listing of the slave states in my post set off a couple of bitter posts like #434 which contains a Gloria Allred-level allegation against President Davis."
We should notice that jeffersondem has never complained about mockery towards alleged "gay Lincoln" but now suddenly objects to Mrs. Jefferson Davis cartoons:
jeffersondem: "Others contend domestic insurrections is a euphemism for loyalists insurrections but that does not make sense because the grievance with loyalists insurrections were considered elsewhere in the DOI."
Wrong, because there are no other references to loyalist insurrections in the Declaration of Independence.
"Domestic insurrections" is the only reference to what were, at the time the cause of five battles in three states, something which never happened regarding slave revolts.
jeffersondem: "It is worth remembering that one of the causes for independence that the slave states cited in the Declaration of Independence was that Britain was interfering with slavery in the colonies."
It was not a cause, explicit or implicit, expressed by Founders themselves.
If you doubt that, then ask yourself this: suppose Lord Dunmore never issued his proclamation inviting servants & slaves to join the British army.
Would any word in the Declaration of Independence have changed?