Maybe if you’re under a certain age.  Anyone who grew up in the ‘80 will remember the SVO.

1967 AMC Marlin

Back in the late 80s/early 90s some guy in my town had a notchback Trans Am like this one. If I recall correctly only about 700 were made. I always thought it was an improvement over the big glass hatch.

As if the Olds Cutlass Calais 442 W41 wasn’t obscure enough... We get the Olds Achieva SCX W41.

Norton Commander. NOT the Commando. During one of the many attempts to restart the brand, the Commander was developed as a rotary-engined touring bike. Available in the late 80's and early 90's, it used multiple parts from Yamaha to make it offerable.

The CB1100 is great. 

Triumph has a few good options here.. : the Bonneville (t100 or T120), or the Street Twin, or the Scrambler. Clearly they arent japanese, but they do have the style, handling and comfort of that sort. Go test ride a latest generation Bonneville and you’ll find a perfect example of the formula you mention!  

Kawasaki W800 is the most UJM bike out there these days, it’s just not that popular. Suzuki TU 250 is a proper UJM as well. There have been other retro throwbacks like the CB1000. None of them did amazing.

This is the motorcycle version of the car problem:

As an owner of a first-gen XSR900 and having ridden the Z900RS, believe me when I say a flat bench seat is the last thing you want on any bike in this class. Kinja (or whatever it’s called now) won’t let me upload the photo, but triple-digit power and a roughly 450 lb weight equals a one way ticket to Wheelie City.

UJM were either light and a little light on power, or powerful and a bit porky.

You mentioned the XSR 900, but failed to mention the XSR 700. 74 horsepower and 50 lb/ft of torque, at the crank, is very close to the UJM of old. It weighs 410 lbs wet, has a bench seat and is sporty thanks to it sharing the MT-07/R7 platform. Slap an Akra exhaust, intake, velocity stacks on and tune it and you’ll be…

Anything from any of the Taxi films. The original one for 1998 is written by Luc Besson and has one of the best opening scenes. Literally saw it by accident while late-night channel surfing (remember that?) as the opening sequence began.

That’s why I ride a CB1100. Closest you can get to a modern UJM I think. Not available new and pretty heavy but dead reliable after years of beautiful finicky italian and german bikes.  

I’m expecting dozens of mentions for Ronin, Bullitt, Baby Driver, and the Blues Brothers. And while I love all of these movies and the chases they contain, I was always smitten by the opening scene from The Cannonball Run. This may have been my personal introduction to the Countach and cemented my love for this…

Ronin, Ronin.....Ronin

So many in The Blues Brothers. Final one is legendary, but the one in the mall is also pretty good.

The best one is Ronin. it had everything but the most important it felt real with daily moderate fast cars. You normally have chases with non speed matching cars in other movies but in Ronin they matched the cars to perfection, plus the chases and camera work and sound where top notch

Honestly, any of the ones from Ronin

Without question