@mcrisnidh welcome to the knime forum.
You will have to convert your list to a Pandas dataframe.
https://docs.knime.com/latest/python_installation_guide/#_configuration
Something like this
df = pd.DataFrame(list)
knio.output_tables[0] = knio.Table.from_pandas(df)
Or
df = pd.DataFrame(list)
knio.output_tables[0] = knio.write_table(df)