List of all stored procedures that have no parameters

I want to find out which stored procedures in the database have no parameters. I tried this but not sure:

1) Concatenating tables sys.all_parameters

and sys.all_objects

:

select 
   ao.name,ao.type, ao.type_desc
from 
   sys.all_parameters pa
       left outer join 
   sys.all_objects ao
       on pa.object_id = ao.object_id
where 
    pa.name like ''
and 
    ao.type not in ('FN','AF','FS')

      

        
        
        
      

    

2) From the table information_schema.parameters

:

select * 
from
    information_schema.parameters 
where 
    parameter_mode not in ('in', 'out', 'inout')

      

        
        
        
      

    

3) From information_schema.parameters

:

select * 
from
    information_schema.parameters 
where
    parameter_name like ''

      

        
        
        
      

    

However, I'm not entirely sure if they are correct. Is there something direct?

Maybe something like:

select * from sys.procedures where xtype = 'P' and has_parameters=0