I didn't initially realize a polished chrome knob was the answer I'd been looking for. When I figured it out, not a huge number of choices (for my tastes), but Amerock nailed it. The chrome pops, kind of traditional, a bit retro. Perfect. In stock and fast delivery.
Back in 2007, I bought brushed nickel, 1 1/2" mushroom-shaped Inspirations kitchen cabinet knobs at the now-defunct Great Indoors, but recently somehow lost two. Wayfair featured the knob, but didn't actually supply it. Home Depot and Lowe's didn't even come close. So, to the Internet I had to resort and troll. I searched...and then, there it was!! Thank you, Amerock. You really rocked this one!!!