Canada

screen sizes

Where I'm from, even that has a cm rating right next to it.

Canada is one of those "rest of the world places". Officially uses metric but the general population here (unless they are recent immigrants or work in the medical field) will tell you their height in feet and inches, their weight in lbs, they will tell you a recipe using Fahrenheit. Pizza is measured in inches. If you buy food, like deli meat, it is displayed in grams on the scale but a lot of people will ask for a half lb or whatever still. We use km for speed but we still use square footage if you are selling a house. Unless they are boomers or older, we will use Celsius for the weather though. I remember growing up learning metric and it was fine, everything made sense, then when I hit college was forced to learn American imperial for my job field cuz that's what the American standard was. I hate that I think in inches and feet for a lot of crap now. It's irritating switching back and forth depending on what you are doing.

There's ton of weird niche stuff. Mostly cycling related here but you get the point...

Bicycle pedal axle thread size
Bicycle wheel and tire sizing (actually metric standard but inches in common language)
Also wheel size on cars
Bicycle steerer tube diameter
10mm qr axle diameter on hubs (3/8" actually)
25.4mm handlebar clamp diameter sounds oddly familiar...

Most proper denim pants are sized in inches, even from non-US countries.

But of course vanity sizing is a thing so a size 36 is closer to 38in unless explicitly specified, and most online retailers provide true sizing in cm anyway, so there's that.

In Australia it's fairly common to see pizza sizes in inches. The body stuff not as much, but sometimes.