I understand your dilemma. We recently used Delta Arctic SS kitchen faucet on a job, and it's a "blacker" stainless steel look. That's tough to match.

Here's the water filter faucet we ultimately used - not a direct match - but a nice stainless and solid faucet. Complimented the Delta SS well enough.

Good luck!

Home Depot has a Delta Transitional Single-Handle Water Dispenser Faucet in Arctic Stainless that is pictured as being used with a water filtration system. Maybe that would work for you? Delta Arctic Stainless Drinking Water Faucet

I am using the Delta faucet that Chocolatesnap suggested for my RO. I like the faucet as the stream is good and steady. If you system does not have a check valve, you will have to use the air gap option piece that Delta puts as an option in the box or you could have backflow problems.

Thanks so much for the insight and info. I am hoping to find one that is a closer style match, but will keep this in mind as an option.

Honestly I find people get so stressed about everything matching , it is a water faucet it comes in only so many finishes if this was such a big deal you should have stayed with simple stainless faucet instead of some new finish that not everyone makes. A day after it is installed you will not even notice it, mine does not match my faucet in style and I never think about it anymore.