This are the flags/emblems I found travelling around:
Several Cities have white flags in their boats,
Thais - Green Emblem Can be found at King's Palace.
Importat to mention: Liberty bay, Edron, Port Hope and Venore belong to the Kingdom of Thais. So this Emblem can also be found in Liberty bay.
Edron - Banner Can be found at Daniel Steelsoul's place.
Kazordoon - Banner Can be found at Temple.
Ankrahmun - Dragon Flag Can be found at Boat. EmblemCan be found at Pharao's tower.