Not an expert, but #1 looks like more black on the cheeks than is typical for Black-chinned. The bill looks on the long / curved side for a Black-chinned (and short for a Lucifer), so could probably go either way, but probably better for a Black-chinned. #2-#4 has less black on the cheek, though it's still pretty dark for a Black-chinned. On the other hand, all the photos seem to lack buff / cinnamon color on the flanks which Lucifer females seem to usually have. In this case I would definitely pay attention to any sound it might make.
Hummingbirds frequently hybridize, so maybe that is a possibility.
Hope that helps.