I have a 30km/day commute which I've done on three types of bikes: a dutch bike, a hardtail MTB and a gravel grinder w/ road tires. So far, my favorite is the road bike!

Following mcours2006 suggestions, I'd suggest looking for an "adventure road" or gravel grinding type of bike (though the line it's getting blurred, some CX models focus primarily on racing). Wide tyres, disc brakes, mounts for panniers and fenders make them very versatile and drop bars are not that hard to get used to (:

Something like the Mango Bikes Point AR https://www.mangobikes.com/bikes/point-ar/