While the male's pattern does look like Cinnamon Enchi for the most part with the blushing and large amount of black areas, I suspect he is not actually Cinnamon because of how his eye stripe looks. Cinnamons almost always have a smudged look at the back of that stripe, except certain combos that really undo that. The way his headstamp looks, I'm guessing he's got some stacked brightening genes causing all that blushing. I don't see that smudge on the babies either.
This particular viewing angle makes it pretty tough to get a good look at pattern, especially the faces, but I would agree 1 & 3 are Enchi.
2 Looks especially dark, but not at all in the way a Cinnamon would. 4 looks pretty normal. 5 looks like Pastel + ? some brightening gene perhaps. One of the Enchi OS has pretty strong blushing and flaming, so I suspect whatever that morph is, it's the same on both 5 and that Enchi.
As far as ID'ing the darkening gene, I would look closely at Chocolate, Raven, and some of the other darkening genes that aren't a part of the black-back complex like Cinnamon, HRA, Black Pastel, etc. I don't have time to dig through right now and don't have a ton of experience with those, but it's at least a starting point.
As far as what brightening morph(s) I'd check the bellies for tracks for hints of YB being there first. See if you can get some better pics of side pattern and I can take a closer look to help better ID them.