Extracting list members with test in list attribute

[Darren S.]

Hoping for a hand with this, I haven't been able to get the logic right.

I have the following YAML list:

desktop_users:
  - name: admin1
    state: present
    full_name: Admin 1
    groups: [sudo]
  - name: admin2
    state: present
    full_name: Admin 2
    groups: []
  - name: paul
    state: present
    full_name: Paul
    groups: [kids]
    locked: true
  - name: munin
    state: present
    full_name: Munin
    groups: [sudo, kids]
    locked: false

I'm trying to extact a list of kids' account names, i.e. list of users that have 'kids' in their groups attribute (which is itself a list). For the above data, the desired outcome is to produce the following list to work with:

['paul','munin']

I tried to fit this into map() and selectattr() approaches but couldn't figure out how to structure a test to evaluate inclusion of a value in a list.

- Darren