According to this post - you can search for what's called a 4" minispread - like this or this (you probably should not attempt to install a 8" spread faucet on the 4" prep).

I was also able to find few 4" centersets with a plate that doesn't really look like a plate... like this one - so you should have some options :)

If you absolutely cannot find something that you like - perhaps worth picking another remnant (I'm with you on the ugliness of the cover plate...)

Good luck!

(also - I'm surprised that the fabricator did not demand to physically see the faucet... ours demanded to see faucets, sinks, etc. - everything that requires drilling a hole in the stone)

We tried to give it to the guy who came to measure the template but he wouldn't take it. Now it's costing all of us. I'll try to find those pictures as they didn't post. Thanks so much!

Hi HU-628016829 - to clarify, I did not attempt to post pictures - but I did provide direct links to the products I was referring to (the "this" instances in my first response are actually links - you can click them to be redirected to the product pages I was referring to, including photos and details)

Yes, I found them. Thanks so much! That was very thoughtful.