If I have a pipeline job (formerly workflow) Foo, that then triggers another pipeline job Bar, it does not get reflected in the delivery pipeline view. Job Bar is triggered as a build step in my job, for example:

Job Foo:

stage('Building') {
    println 'Triggering Bar'
    build 'Bar'
}

Job Bar:

node('master') {
    stage('Child job stage') {
        println 'Doing stuff in child job'
    }
}

Only the Foo pipeline job and its steps are displayed in the delivery pipeline view:

In this case, both Foo and Bar should have appeared as separate entities on the delivery pipeline view.