Reminder here that Draconians are also the Spellscale Dragonborn subrace in Exandria, but when WotC officially published Explorer's Guide to Wildemount, they edited the name of the subrace to Draconblood Dragonborn, and in the subsequent 3rd Party Tal'dorei Reborn, they were called Dragonbloods, all because WotC wanted to make clear that these are not Krynn's Draconians.
Draconians have a very specific identity in D&D, and Fizban's brought them from Krynn to the rest of the D&D Multiverse. Glad we're finally exploring them now, between last year's book and this year's.