The Blasted Lands: A Tunnels and Trolls campaign
In 5e T&T gnomes are not a standard character race, but there are hobbits, leprechauns, and fairies. Of course I could house rule a gnome if we really wanted to play one.
There are three main character types, warriors, wizards, and rogues; how you play each type is pretty flexible. It all comes down to your desired backstory.
Right now the party consists of one rogue and three wizards, so they are really in need of warriors; but rogues would be good as well.