The 14 position players
With an extra bench spot, the Braves do have the opportunity to take an extra position player. While Chadwick Tromp or Luke Williams could make sense, I think the Braves use the 26th spot to focus on hitting.
Sean Murphy and Travis d'Arnaud will handle the catching duties, and Matt Olson, Ozzie Albies, Orlando Arcia, and Austin Riley will round out the infield. The Braves will stick with the usual platoon of Kevin Pillar and Eddie Rosario in LF, and Michael Harris II and Ronald Acuña Jr. will take their normal spots in the CF and RF. Marcell Ozuna, of course, will take the DH spot.
This leaves three more spots on the bench. Nicky Lopez is a lock for the backup infielder spot, and Forrest Wall will be this year's Terrance Gore (yes, he did play for the Braves).
This leaves the final roster spot for Vaughn Grissom. Even though he didn't get an opportunity with the Braves in September, he is a better hitter than Williams, and he offers some level of flexibility if the Braves choose to trust him in the field.
Catchers: Sean Murphy, Travis d’Arnaud (2)
Infielders: Matt Olson, Ozzie Albies, Orlando Arcia, Austin Riley, Nicky Lopez, Vaughn Grissom (6)
Outfielders: Ronald Acuña Jr., Michael Harris II, Eddie Rosario, Kevin Pillar, Forrest Wall (5)
DH: Ozuna (1)
Total position players: 14