Merging two dictionaries by key in Ansible

I'm looking for help in merging two dictionaries in a specific way. I would be very grateful for any thoughts.

I have two dictionaries like this: 1st dict:

servers:
  server1:
    Property1: A
    Property2: B
    Property3: C
  server2:
    Property1: A
    Property2: B
    Property3: C

2nd dict:

management:
  server1: ip1_addr
  server2: ip2_addr

Desired result:

servers:
  server1:
    Property1: A
    Property2: B
    Property3: C
    Property4: ip1_addr
  server2:
    Property1: A
    Property2: B
    Property3: C
    Property4: ip2_addr

Or I may have chosen the wrong path, all I need is to loop over two that dictionaries in one go, to get ip1_addr under server1 key and ip2_addr under server2 key

Solution 1:

Convert the dictionary management first

    - set_fact:
        mgmt: "{{ mgmt|d({})|combine({item.key: {'Property4': item.value}}) }}"
      loop: "{{ management|dict2items }}"

gives

  mgmt:
    server1:
      Property4: ip1_addr
    server2:
      Property4: ip2_addr

Then combine the dictionaries

    - set_fact:
        servers: "{{ servers|combine(mgmt, recursive=True) }}"

gives the desired result

  servers:
    server1:
      Property1: A
      Property2: B
      Property3: C
      Property4: ip1_addr
    server2:
      Property1: A
      Property2: B
      Property3: C
      Property4: ip2_addr

If you want to iterate the result it's easier to convert both dictionaries to lists

    - set_fact:
        mgmt: "{{ mgmt|d([]) + [{'server': item.key,
                                 'Property4': item.value}] }}"
      loop: "{{ management|dict2items }}"

    - set_fact:
        srvs: "{{ srvs|d([]) + [{'server': item.key}|combine(item.value)] }}"
      loop: "{{ servers|dict2items }}"

give

  mgmt:
  - Property4: ip1_addr
    server: server1
  - Property4: ip2_addr
    server: server2

  srvs:
  - Property1: A
    Property2: B
    Property3: C
    server: server1
  - Property1: A
    Property2: B
    Property3: C
    server: server2

Then use Community.General filter lists_mergeby

    - debug:
        msg: "{{ srvs|lists_mergeby(mgmt, 'server') }}"

gives

  msg:
  - Property1: A
    Property2: B
    Property3: C
    Property4: ip1_addr
    server: server1
  - Property1: A
    Property2: B
    Property3: C
    Property4: ip2_addr
    server: server2