Great aerial maps. Do you have any for Manbij?
If you look in closely, where the SDF is pushing in from the West, you will see that they were right up to the City Hall.
Often there are declarations made that “the City has Fallen” when the City Hall or Mayor’s residence are captured - so we might hear something like that in the next couple of days.
In the case of Manbij though, ISIS does not have an escape route, so they will have to fight down to the last man, try to sneak out with the civilians (which has not been very successful for them) or try to cut a deal for safe passage, to save their civilian hostages (who are dying at a significant rate).
IMHO, The likely scenario is that the pace of ISIS falling back will increase, as their losses make them unable to function as a cohesive organization, or even as units - but it will still take a couple or three weeks to kill the rest of them. Some might hold out longer in isolated strong points, like the Tatkebat Prison, which you might notice near the Western edge of the map
Particularly in the case of Manbij, which was the center for the foreign fighters of ISIS, and their HQ for planning attacks in the West; we would benefit from them all being killed on the battlefield, rather than have to police them up and prosecute them individually over the next decade or two, inside Western countries. But it isn’t my family that they are holding hostage, so it is easy for me to recommend that they fight to the last.