https://stackoverflow.com/questions/79002263/ansible-loop-is-not-working-with-data-type-test-as-conditional/79003515#79003216

session.txt

$ ansible localhost -e '{"bla": "test"}' -m debug -a "msg={{ bla | type_debug == 'list' }}"
localhost | SUCCESS => {
    "msg": false
}

$ ansible localhost -e '{"bla": ["test1", "test2"]}' -m debug -a "msg={{ bla | type_debug == 'list' }}"
localhost | SUCCESS => {
    "msg": true
}