What does cool mean to you? When I was looking at hardware, I saw some really nice items from Buster + Punch, but the number of cabinets I was planning made it cost prohibitive.

https://busterandpunch.com/us/product-category/cabinet-hardware/

I went with Emtek Select and I really like the quality. Not sure if it would be considered cool, but you can mix and match finishes which gives you some flexibility.

You might find something unique at a design center if there’s one near you, or in a design magazine. I saw Lo & Co in a magazine, and a few others I can’t remember. Hoping a designer chimes in with ideas!

https://loandcointeriors.com/collections/handles

For me, "cool" is something handmade and unique. I used pulls/knobs from this artist in my previous house.

https://www.pruskinhardware.com/

@chispa those are cool!

Rocky Mountain Hardware or Sonoma Forge....those two have great design and some in gold.

I agree with @chicagoans the B+P looks really cool!

Rocky Mountain has really really nice stuff, though not sure I would call it "cool". OP are you looking for something more modern?

www.corston.us