Create Function that loops on Parameter Values

Hi all,

I've created a Function to invoke a table from a SQL database. The function will load the table and keep only the columns that are listed in an Excel file. (but converted to a list).

I would like to automate this a bit further, As I will be doing this alot more.
How could I add a loop that would iterate all tables from a table/list untill they are all added. 

This would mean the parameter value for the function would be a list instead of text value as it is now. 
How should I proceed here? Cannot seem to get my head around this. 

The code of current function here :

( parameterTableName as text) => 

let
//parameterTableName = "v_ha_last_inpat_haward_curr_ward_nl" ,
    ColumnsNeeded = Table.SelectColumns( ColumnNames , parameterTableName ),
    #"Renamed Columns" = Table.RenameColumns(ColumnsNeeded,{{parameterTableName, "X"}}),
    #"Filtered Rows" = Table.SelectRows(#"Renamed Columns", each [X] <> null and [X] <> ""),

        ColumnList = Table.ToList ( #"Filtered Rows" ), 
        
        Source = Sql.Database(parameterServerName, parameterDatabase),
        Database = Source{[Schema="dbo",Item= parameterTableName]}[Data],

        #"Removed Other Columns" = Table.SelectColumns( Database , ColumnList )  
            
    in
        #"Removed Other Columns"

The Name of the list containing all tables I want to add in PQ.

AllTables

Hope you guys can help! 
Maybe ImkeF 

Regards,
Robin