They were well known enough to be featured in the school's tribute video at the beginning of Far From Home, and Black Widow is casually name dropped by Flash in Homecoming and Zemo in Civil War. All the Avengers are well known. Maybe not to Iron Man's level, but you'd think there would be more mentioned of everyone else.
Especially Steve, the tribute video in Far From Home suggests that the public thinks he's dead, but he's not even mentioned in Far From Home.
Especially Steve, the tribute video in Far From Home suggests that the public thinks he's dead, but he's not even mentioned in Far From Home.