There was also problem, that some columns were names as USER so I need to do it like this  [ + ColumnName ]
And the results are: 23s,17s, 16s, 16s,...

Complete procedure below.
But I will try to concat the SQL statement a run it in one EXEC, we will see.

ALTER PROCEDURE [ctr].[ColumnVariabilityCheck]
    @withOutput        INT...

I made the same solution.
1st load all my necessary tables and columns
WITH
     DimTables AS (
         SELECT
             t.[name]     AS TableName
            ...