Either, any and there are seven billion online. There are many styles of white cabinetry and many styles of kitchens. Narrow your question a bit or post a photo

I like knobs for cabinets and pulls for drawers. As far as color: what is the faucet finish?

It all comes down to personal preference, and Jan is right - there are thousands of options to pick from! Black hardware will give you more a contrast with your white cabinets, and silver tones (like satin nickel and polished chrome) will add some sparkle to the room.

Here are a couple ideas to get you started.

Livingstone Cabinet Knob · More Info

Alesund 96mm Cabinet Pull, Satin Nickel · More Info

Arts & Crafts Cabinet Pull · More Info

Contemporary Round Cabinet Collection · More Info

Polished Chrome Wire Pulls · More Info

I like pulls on anything at hip height, because knobs tend to catch my pockets and belt loops, to tragic effect. In the end, I like pulls everywhere, but this would be my practical note.

I would need to see an image of the kitchen? Please post a couple of images?

[https://www.houzz.com/photos/white-kitchens-transitional-kitchen-toronto-phvw-vp~24098947[(https://www.houzz.com/photos/white-kitchens-transitional-kitchen-toronto-phvw-vp~24098947)