I love goblins and lizardmen. Goblins because deranged little dudes running around is always a blast. Lizardmen because alligator people with melee weapons are the way I wish dinosaurs evolved instead of being birds.
I have a tiny little idea bumping around my head for a setting where dragons are not only intelligent but are the apex species. I think it'd be cool to base them off solitary predators like bears, jaguars, etc, as it means they would hate cooperating but would grudgingly do so if necesaary.