AT-STs

Back:
2006: 10174 UCS Imperial AT-ST

Middle row:
2001: 7127 Imperial AT-ST
2007: 7657 AT-ST
2009: 8038 The Battle of Endor (AT-ST)
2016: 75153 AT-ST Walker
2018: 75201 First Order AT-ST
2018: 75201 First Order AT-ST Alt

Front row:
2003: 4486 AT-ST
2011: 30054 AT-ST
2012: 9679 AT-ST
2017: 75184 Star Wars Advent Calendar (Day 22)
2018: SW911837 AT-ST