I'll guess bumper cover, crash bar, radar, ultrasonics, radiator mount and radiator, various plastic mounting pieces for hardware, louver assembly, hood, frunk assembly and latch, & trim under the car connected to the bumper cover, at a minimum. As others have mentioned, perhaps fenders and headlights will also need replacement; hard to tell from the picture. There are quite a few things behind that bumper cover that are important! If they have to replace the main frame rails (seems unlikely but who knows) for some reason it'll keep on adding up.
Really starts to add up, seems like $10k easy after adding rental expenses as I said above. I am reasonably sure in this case that the car is not totaled though!
Do let us know what it ends up being! The first estimate from the body shop I would double or triple, to get the final value of the damage.
Do look into diminishment of value laws in your state and be sure to be properly compensated for the impact on the resale value of your vehicle if it is possible. Fortunately this damage isn't likely to cause you any long term problems, which means that for the most part this cash is just a payment for the (substantial) hassle of having to get your car repaired (and of course it WILL substantially impact the resale value but the actual impact depends on how long you plan to keep the car). It seems like $3-4k would be fair in this case since it is relatively minor damage, but I know nothing about the actual market rates for value diminishment.
My understanding is DOV claims are usually done at the end of the repair process, but consult with your insurance company or agent to determine how that claim is done.
A diminished value claim pays you the difference between what your car was worth before the accident and what it's worth now. But you can only make a diminished value claim in certain states and if you didn't cause the accident.
www.valuepenguin.com
(This suggests probably 1-2k would be more in the ballpark but I think it's probably highly variable depending on how the claim is made. And obviously you have to know what the actual damage is first. Which is why it's done at the end of the repair process, not at the beginning.)