Peach or Fiesta are the "semifinal" games.

"Additional selection criteria
The highest-ranked champion from the "Group of Five" mid-major conferences (American Athletic Conference, Conference USA, MAC, Mountain West, and Sun Belt) is guaranteed a berth if the group's top team is not in the playoff.[51]
The remaining five at-large bids will be determined by committee rankings.[51]
If the Big Ten or SEC champion is available for a non-playoff bowl in a year when the Rose and Sugar Bowls are hosting semifinals, that team will appear in either the Cotton Bowl, Fiesta Bowl, or Peach Bowl, but not the Orange Bowl.[51]
In the Orange Bowl, the SEC and Big Ten are guaranteed at least three appearances during the eight non-playoff years, while Notre Dame can only appear a maximum of twice.[52]
In non-playoff years, if the Orange Bowl matchup creates a regular-season rematch for the ACC representative, the bowl may choose to "skip over" the prescribed opponent from the SEC/Big Ten/Notre Dame group and select the next highest-ranked team from the group. The team that was rejected would be placed in one of the three at-large bowls, if it meets ranking standards.[53]
In years when the Orange Bowl is a national semifinal, the ACC champion will play in the Fiesta or Peach bowls if it is not selected for the playoff.[54]
In choosing the pairings for the four non-playoff bowls, the committee will try to create "the most compelling matchups possible", while taking into account geography and team rematches from both the regular season and recent bowls.[55]"