---
- name: Ping check to determine if hosts are reachable
  hosts: all
  become: false
  gather_facts: true


  tasks:
    - name: Ping target hosts
      ansible.builtin.ping:
      register: ping_results
      ignore_errors: true
      failed_when: false

    - name: "Ping Check: Successful Hosts"
      debug:
        var: ansible_play_batch
      run_once: true
      delegate_to: localhost

    - name: "Ping Check: Failed Hosts"
      debug:
        msg: "{{ ansible_play_hosts_all | difference(ansible_play_batch) }}"
      run_once: true # noqa: run-once[task]
      delegate_to: localhost

...