I suspect most folks are, given this never left UA.Just doing whatever at this point.
It's not done in a bracket style--the winners will just all be put into one final survivor match. I fully expect the Fighter to win simply because there's an ideological commitment to making it so.I’m wondering if there are any other similar classes… I believe there are 13 official ones. This makes 14. Are there two more to get things to full brackets? Or is it just all 14?winners in direct competition next?
Not that I know of. As far as I can tell, the final round will have 14 contestants (Artificer, Barbarian, Bard, Cleric, Druid, Fighter, Monk, Mystic, Paladin, Ranger, Rogue, Sorcerer, Warlock, and Wizard.) I know that there has been a couple of rewrites to the Ranger class (one in Unearthed Arcana, the other in Tasha's Cauldron of Everything), but no other completely new base classes.I’m wondering if there are any other similar classes… I believe there are 13 official ones. This makes 14. Are there two more to get things to full brackets? Or is it just all 14?winners in direct competition next?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.