Child components with same parent wrapper

components.component-alpha.js

import Ember from 'ember';

export default Ember.Component.extend({
  classNames: ['my-child'],
});

components.component-beta.js

import Ember from 'ember';

export default Ember.Component.extend({
  classNames: ['my-child'],
});

components.component-gamma.js

import Ember from 'ember';

export default Ember.Component.extend({
  classNames: ['my-child'],
});

components.my-wrapper.js

import Ember from 'ember';

export default Ember.Component.extend({
  classNames: ['my-wrapper'],
  
  actions: {
    doSomething() {
      alert('Wrapper did something!');
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  things: [
    { name: 'alpha', componentPath: 'component-alpha' },
    { name: 'beta', componentPath: 'component-beta' },
    { name: 'gamma', componentPath: 'component-gamma' }
  ],
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.my-wrapper {
  border: 1px solid green;
  padding: 1rem;
  margin-bottom: .825rem;
}

.my-child {
  border: 1px solid orange;
  margin-top: .5rem;
  padding: .5rem;
}

templates.application.hbs

{{outlet}}

{{#each things as |thing|}}
  {{my-wrapper childPath=thing.componentPath}}
{{/each}}

templates.components.component-alpha.hbs

<code>Alpha</code>
<button {{action wrapperDoSomething}}>alpha wrapper action</button>

templates.components.component-beta.hbs

<code>Beta</code>
<button {{action wrapperDoSomething}}>beta wrapper action</button>

templates.components.component-gamma.hbs

<code>Gamma</code>
<button {{action wrapperDoSomething}}>gamma wrapper action</button>

templates.components.my-wrapper.hbs

<code>The wrapper</code>
<button {{action "doSomething"}}>wrapper action</button>

{{component childPath 
  wrapperDoSomething=(action "doSomething")
}}

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}