I'll preface by saying this is working in other locations, where it is not nested. I have a component (cmp A) nested in a lightning:accordionSection, the component contains a  <aura:attribute name="oppContacts" type="Object[]"/> that is displayed in an aura:iteration. My Controller.js has the following code that allows users to 'clone' the js objects (on save, all objects are inserted in SFDC as Custom_Objects via apex):

    cloneThis : function(component, event, helper){
         console.log(event);
        var cloneObj = {}; 
        cloneObj = Object.assign({}, event.getSource().get("v.name"));
        //cloneObj = event.getSource().get("v.name");

        console.log(cloneObj.role); //test
        var optionsArr = component.get("v.oppContacts");
        console.log(optionsArr);
        optionsArr.push(cloneObj);
        
        //set new clone ref priority to none...doesn't help
        //optionsArr[optionsArr.length-1].priority = 'NONE';
        component.set("v.oppContacts", optionsArr);
        console.log(document.getElementById("cW").innerHTML);
        document.getElementById("cW").innerHTML = document.getElementById("cW").innerHTML;
        console.log('set html!!!');
        
        
        //var bottomMarker = document.getElementById("bottomMarker");
        //bottomMarker.scrollIntoView();
    }

The issue I'm having is that the iteration on the page does not update. I believe this is because of how it's nested, but not sure. Hoping to learn the best way to handle this...maybe rerender.js but again, not sure.

I do log the array after the clone, and it does grow. I can also debug in the cmp as {!v.oppContacts.length} and the length does increase by one with each button push. Button is setup as follows:

<lightning:button name="{!contact}" aura:id="{!contact.name}" value="{!contact.name}" variant="brand" label="Clone" onclick="{!c.cloneThis}" />

An odd behavior I noticed was that if I put two of the same "cmp A"'s on the page, clicking my 'doClone' button in one cmp would rerender the other as expected.

I don't want to add to confusion with a wall of code. I think I have the relevant bits. I pretty sure I'm close because this works on other pages, outside of being nested.

I'll lastly add that I'm a newer developer. Open to any input: general approach, specific, js, etc. Circling back for formatting asap.