Power Query List of lists to table of tables

Hi,
I've been trying to change a list of lists to a table of of tables, I have tried

l have managed to get a list of tables ;

 let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
      Custom1 = let alist = List.InsertRange( Source [Units], 0, {null} ), 
             blist = Source [Units], 
              zipped = List.Zip( {blist, alist } ) 
           in List.Transform(  zipped, each Table.FromRows(  {_} )  )
                    in 
                       Custom1

But if I first convert to a tabe of lists I get stuck,

Table.TransformColumns(  Custom2, { "List",         (B)=> List.Transform(B, (C)=>   

Table.FromList(C, Splitter.SplitByNothing(), {"List"} )) } )

OR 
 Table.FromRows( C )    ) } )

So I'm struck with trying to change a table of lists to a table of mini tables ; just to add I'm not saying this of any use I've just been practicing.

Thee examples attached.

Richard.