Generally speaking, when pulling from commercial content based on default D&D conventions:

• “Orcs” map to Chaos Brutes.
• “Halflings” map to Hobgoblins
• “Dwarves” map to Caledonians. Humans, for non-adventuring NPCs. Caledonian Halflings for adventurers.
• “Elves” map to Hibernian Gaels
• “Half-elves” map to Hibernian humans

Damn if I’ve figured out where to map default Hobgoblins to, though. Most of the good critter names are already taken. Goblin-magi, maybe? Mountain-goblins? Goblin-brutes?

Probably goblin-brutes.