Meging data across 3 tables

See the working here - Open a blank query - Home - Advanced Editor - Remove everything from there and paste the below code to test (later on when you use the query on your dataset, you will have to change the source appropriately. If you have columns other than these, then delete Changed type step and do a Changed type for complete table from UI again)

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcvRz93RV0lEyA2IY2wKJbWihFKsTrRTsGOQI4hkACRgbwTQyACsCspCROYZgsIdjpA9IgzGSlK+/j08k1DwQAsl4e/qGIglBJWIB", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Processor = _t, #"Total STJ" = _t, Processor.1 = _t, #"Total Holds" = _t, Processor.2 = _t, #"Total States to be Worked" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Processor", type text}, {"Total STJ", Int64.Type}, {"Processor.1", type text}, {"Total Holds", Int64.Type}, {"Processor.2", type text}, {"Total States to be Worked", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each List.First(List.RemoveMatchingItems(Record.ToList(Record.SelectFields(_,{"Processor","Processor.1","Processor.2"})), {""}))),
    #"Removed Columns1" = Table.RemoveColumns(#"Added Custom",{"Processor.1", "Processor.2", "Processor"}),
    #"Filtered Rows" = Table.SelectRows(#"Removed Columns1", each ([Custom] <> null)),
    #"Renamed Columns" = Table.RenameColumns(#"Filtered Rows",{{"Custom", "Processor"}}),
    #"Reordered Columns" = Table.ReorderColumns(#"Renamed Columns",{"Processor", "Total STJ", "Total Holds", "Total States to be Worked"}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Reordered Columns",{{"Processor", type text}})
in
    #"Changed Type1"