Whitish or black knobs, chrome faucet. The usual knob selection method is to order a few sample knobs and pick the ones you like once the cabinets are installed. There's no substitute for holding up the knobs to the cabinets in real life.

IMO you never choose counter until you install cabinets and the same for pulls or knobs . Waht was driving all the black choices ? I need to see the light and the cabinets installed to help. A stainless sink always my choice . I have black counters and stainless sinks and went with these faucets for the kitchen a mix of black and stainless it is from Kraus 4 yrs old is awesome the spray the best I have even had . As for the cabinet hardware I like pulls in proprtion to the cabinets and not all installed in one direction either often notice what I mean in the kitchen pic.

when you say break up all the black, are you having second thought on all the black already chosen. Stick with what you have, it was your initial choice.

Stainless steel or chrome would work with black and gray.

Can you post photos of the existing space?

Chrome is always a safe bet.