Ehhh . . .Dragonborn are not draconians. Like, not even a little.
Draconians and dragonborn are not the same, not exactly the same, but they both exist in the continuum of dragon-people in D&D.I agree with this, at least in terms of concept space. I know that 5e lore makes them the same, but that's a retcon. Draconians are orcs wearing dragon-suits to make Dragonlance look like less of a Tolkien rip-off. Dragonborn are evolved from the playable dragons in Council of Wyrms.
Draconians have gone through the "Klingon Effect" . . . where they started as irredeemable villains and evolved into more three-dimensional beings capable of the full range of
Sadly (IMO) in 5E, draconians have NOT been retconned into being the same as dragonborn, the opposite rather! The only 5E Dragonlance book, "Shadow of the Dragon Queen" tries to differentiate draconians from dragonborn by making them MORE monstrous.

