I would rule out Double Sunset Glow (expecting lighter coloured seedlings from a cross with it).
Of the remaining three I think it could be anyone of them.
The appearances of the other seedlings when they bloom may help. However, actually measurements might also help narrow the possibilities. Those would include scape heights of both parents in your growing conditions, bud counts of both parents, flower sizes, petal and sepal widths. Then the same measurements for each of the seedlings from the cross separately. Even with those it may not be possible to rule out any of the three.
