Captain Holt wears his Commendation breast bar above his World Trade Center Breast Bar. When the WTC bar is worn, it is worn above all other medals, but below the American Flag bar.
Wuntch's commendation bars lack the black "WTC" commendation, given to all NYPD officers who served on or in the wake of the 9/11 attack on the World Trade Center. Holt, Terry, and most high-ranking officers seen throughout the series have it. Wuntch has served in the NYPD at least as long as Holt, so she should have received the WTC bar. Also, most of the commendation bars Chief Wuntch wears are not issued by the NYPD.
Several of the commendation bars Captain Dozerman wears are not issued by the NYPD. Also, Dozerman's commendation bars lack the black "WTC" commendation, given to all NYPD officers who served on or in the wake of the 9/11 attack on the World Trade Center.
If Holt was truly promoted then he should have been made a Deputy Inspector and wore gold oak leaves on his collar. Since he is still a Captain, then this was just a transfer.