Just to be clear, with the Braves pick 24th overall in the 2021 MLB Draft, mock drafts are not going to be particularly accurate when it comes to them. There are just too many moving pieces ahead of them to realistically project who is even going to be available when they pick, let alone who they will pick.
That said, what mocks CAN do is give us some ballpark estimates regarding who may be available as well as glean insights into what sorts of players the team may be targeting. Again, not a perfect science because misdirection is a real thing and a lot of teams are looking at a lot of players, but you get the idea.