Postgresql_user - loop TASK through more then one list

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1

I have a TASK to create some postgres user with password

    - name: create users, set hashed passwords
      community.postgresql.postgresql_user:
        name:     "{{ item.name }}"
        password: "{{ item.pw }}"
        encrypted: true
        comment:  "{{ item.comment }}"
        role_attr_flags:  "{{ item.attr }}"
        login_unix_socket: '/tmp'
      become: true
      become_user: postgres
      loop: "{{ pg_roles }}"

{{ pg_roles }} comes from host_vars file
now, there are other roles needed that are not specific to a singular host, but are equal for all hosts in the current group.
so there is adm_roles variable defined in group_vars file.

Now, I am wondering whether I can loop though both lists (pg_roles & adm_roles) inside the same TASK or whether there must be a second identical TASK for each list?

I tried:

...
  login_unix_socket: '/tmp'
become: true
become_user: postgres
loop:
  - "{{ pg_roles }}"
  - "{{ adm_roles }}"

but that didn’t work (list item has no attribute ‘name’, I think)

2

Could you post an example of the adm_roles and pg_roles dictionaries?