As others have pointed out, there is uncertainty in the US as to what is a "commuter bike." Most bicycles sold in this country are road bikes, mountain bikes, or hybrid bikes, all of which are.optimized for recreation or sport. When people commute, it is usually on one of these. Bike shops almost never have any category for commuter bikes, but will recommend bikes for commuting along with accessories such as racks, fenders, and lights to make them more suitable. If either everything or nothing is a commuter bike, it's hard to respond to your poll.

Now, there is a category of bike that predominates in Northern Europe and Asia, with upright position, fenders, built-in dynamo lighting, hub gears, and drum brakes. I'm not sure if they have a name for them -- they might be just considered typical bikes. Since they are peoples primary short-range transportation, I don't think they would call them "commuter bikes," but I think these are the bikes you are asking about.

What I like is that one can just hop on and go -- no changing clothing, no mechanical tinkering. Basically, they are good transportation because they are more convenient than driving, can be fitted out with studded tires for winter, and don't rot out from road salt the way cars do. What I don't like is that they and their spares are hard to find in this country. Also, many bike shops are unfamiliar with hub gears and drum brakes.