My commuter is a 1972 Schwinn Suburban with a front basket on the handlebars, and Schwinn generator headlamp/taillamp (which I don't use because I don't commute in the dark). Not MTB and not hybrid. Call it a road bike. I wear a backpack containing all my clothes and such. No tools or tubes. If it breaks, I'll walk and push it.
The other day I rode my 1988 Peugeot to work because I hadn't had the time to address some alignment problems on the Schwinn. The Peugeot has drop handlebars, which I am not accustomed to using. The heel of my hand was very sore when I got back home. And my commute is maybe 20 minutes each way. I think I don't like drop handlebars.