Outfielders/designated hitter - Bryan Reynolds, Jack Suwinski, Edward Olivares, Andrew McCutchen
We're going to call this section outfield/designated hitter. That is because, with how the roster is currently constructed, odds are one of Andrew McCutchen and Edward Olivares will be in right field most days with the other serving as the team's DH.
As for the other two, Bryan Reynolds will have left field locked down in Pittsburgh for the next 7 seasons. Jack Suwinsk certainly left things to be desired last season. His 32.2% strikeout rate was far too high, he was very poor in clutch situations, and he slashed just .200/.295/.313 with a 68 wRC+ and a 41.7% strikeout rate against left-handed pitching. All of that said, if the season started tomorrow Suwinski would be the guy in center field.