GT Team 1
Peaks: Volta a Catalunya, Tour de Suisse, Tour de France
One of two five men teams. It usually consists of your main stage racer and four helpers.
GT Team 2
Peaks: Paris-Nice, Tour de Romandie, Giro d'Italia, Critérium du Dauphiné
Four riders, including your second stage racer (or your first, if the Giro has a higher priority). The Dauphiné may seem a bit unusual, but your leader will still have a shape of around 90, so it's fine.
GT Team 3
Peaks: Vuelta al Pais Vasco, Eneco Tour, Clasica San Sebastian, Vuelta a Espana
Four riders, your third stage race leader. It's important that you have a strong time trialist (ideally your Vuelta leader) for the Eneco Tour in this team.
Ardennes
Peaks: Tour Down Under, Tirreno-Adriatico, Milano-San Remo, Ardennes, Cyclassics to Lombardia
Speaks for itself: The main classics squad with your top puncheur. Depending on the respective variant, a good climber/time trialist for T-A is recommended. In addition, if you have, a punchy sprinter guy for MSR, the Cyclassics and Ouest France would be good.
Flandres
Peaks: Cobbled Classics, Tour de Pologne
Maybe the team with the least importance. It's for the cobbled classics mostly, but one team member should be a puncheur/climber guy for Poland. After Poland, the team is helping as a fill-up for the Ardennes team.
Sprinters 1
Peaks: Tour Down Under, Milano-San Remo, Tour de France
The peaks speak for themselves. Usually, the best sprinter is the leader here.
Sprinters 2
Peaks: Giro d'Italia, Vuelta a Espana and prep races
The sprinter for the other tours. Very important: This is the second team with five riders. Both sprinter teams usually consist of the lead sprinter, at least one lead out and at least one rouleur helper.