Mandalorians became a theme in Shadows of the Galaxy, with The Mandalorian and Bo-Katan Kryze as leaders and Mandalorian Armor as the trait's signature upgrade. Ashes of the Empire turned them into a full archetype: it added more than 25 Mandalorian cards, split across the clans fighting over Mandalore. Clan Kryze, Clan Vizsla, Clan Wren and the Children of the Watch each bring their own units, so most decks pick one leader and build around that clan's cards.
The Mandalorian (Din Djarin): has a version in most sets since Shadows of the Galaxy, including We Can't Keep Running and Devoted Rescuer (Ashes of the Empire) and From The Shadows (Icons 2027).
Bo-Katan Kryze: Reclaiming Mandalore and For All Of Mandalore (Ashes of the Empire), Right Place, Right Time (Icons 2027).
Clan leaders: Pre Vizsla, Paz Vizsla, Gar Saxon, Sabine Wren and The Armorer.