all the blacks and the one white in the bundle will be hot, they are on the same circuit but the blacks or hots will be run to the light boxes on the other fixtures , if they wired all of them the same way , this is what we call old style wiring , instead of having a hot and a switch leg at the...
looks like the hot is being broken in the switch, black wire in fixture should go with black and white in fixture should go with the whites , in picture it looks like one of the whites or neutrals is mashed if copper is showing ,be sure to tape it good, make sure all the whites or neutrals are...
give my nephew a call , he sells , installs whole house generators his name is randy ( hamrick electric) 706-889-3028 he can probably answer any questions you have.
prayers sent, this is awful, always remember , never take anything for granted, especially your family and loved ones, we never know when will be the last time we see them