I will stop by the house tonight and see if they are hung yet. Hopefully this week sometime. I initially wanted the pebble shape too! I don't know what changed my mind, bc I felt this one was too school-house looking at first. But I made a couple mockups and just felt like this one went better. IDK lol, I'm making it up as I go haha. I also got the flush mount for over our sink. I went with the brass too to mix it up and am using brushed brass hardware on my island. Faucet is chrome. Everything else is ORB- perimeter cabinet hardware and doorknobs, etc. One thing I didn't realize is the metal rod is only like 1-foot long and the rest is a gold rope. Look at the picture of the canopy closely and you will see. I'm hoping it doesn't look stupid bc I'm keeping them. They were on sale several months ago but haven't been since. Sign up with an email and you will get a one-time use coupon code for 15% off. It's a ONE TIME use though. I had to use 2 different emails. :)

How high is the ceiling in the foyer? You don't want the light to hang lower than 7' from the floor. If the fixture is tall and therefore can't take much of a chain that looks strange. I like the Hampton fixtures you posted, but they're very traditional. If that goes with your style then one of them would be a good fit. If not, consider one of the ones that @RL Relocation posted.

LED tape light, in a diffuser channel, inserted into a rabbit in the wood. Use a diffuser channel for the other sections as well.

Because I still don't understand the space below I will have to wait for more pictures to answer about wood slats. I'd need to see the colors of the floors, the doors... the rails. I will say that that ray of light on that wall seems intentional and needed in a potentially dark stairway. You would change that concept with light absorbing wood slats. Where's the architect?