community.general/docs/docsite/helper/lists_mergeby/example-004.yml

---
- name: 4. Merge recursive by 'name', keep lists
  include_vars:
    dir: example-004_vars
- debug:
    var: list3
  when: debug|d(false)|bool
- template:
    src: list3.out.j2
    dest: example-004.out