During the final battle in Avengers: Endgame, apart from the obvious death of
were there any other known protagonist casualties such as Asgardians, Sorcerers, Wakandans etc.
In terms of good guys the only known named character we see die is Tony, all the others survive. Of course I'm sure at least some Asgardians, Sorcerers and/or Wakandans die as there were a lot of red shirts fighting for the good side.
The deaths really all come from the side of the bad guys of which we have:
2014 Children of Thanos
2014 Chitauri, Outriders and Leviathans
To bend the question slightly you could count Steve Rogers, whilst he doesn't die and it happens after the final battle, he does essentially retire and gets really old.
Also bending the rules Black Widow dies sacrificing herself so the team can get the Soul Stone but this is before the final battle.