They have no other 'subtype', to use the D&D 3rd edition term, as those don't strictly exist (although parenthetical 'tags' after the type exist and are most commonly used in statblocks to give the creature's race).
If even the more powerful half-dragons are simply humanoid, then dragonborn are also certainly humanoid, as Crawford says.
Some adventure modules, including Hoard of the Dragon Queen (p.91-93), do include such NPCs as: They are humanoids.ĭespite much searching, I am unable to find a D&D 5th edition book featuring a dragonborn NPC statblock.
