Sightly:How to iterate Map<String, Map<String, Map<ModelObject, List<ModelObject>>>>

Did you chek this post: Sightly : How to Iterate through Map&lt;String , Map&gt;

//Here an example the shows how it can be done, without java code.

  https://github.com/heervisscher/htl-examples/blob/master/core/src/main/java/com/adobe/examples/htl/core/hashmap/HashMapExample.java

HTL-code:

<div data-sly-use.hashmap="com.adobe.examples.htl.core.hashmap.HashMapExample"

     data-sly-list="${hashmap.map.keySet.iterator}">

     ${item}

     <ul data-sly-list.aem="${hashmap.map[item].keySet.iterator}">

         <li>${aem} ${hashmap.map[item][aem]}</li>

     </ul>

</div>

Another post List of maps in Sightly

Helpx https://helpx.adobe.com/experience-manager/using/htl_movie62.html

~kaututk