[SIZE=1]// Table1
let
Source1 = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
Source2 = Excel.CurrentWorkbook(){[Name="Table2"]}[Content],
Compare = Table.AddColumn(Source2, "Compare", each List.Contains(Source1[type],[type])),
ROC = Table.SelectColumns(Compare,{"Compare"})
in
ROC[/SIZE]