Hi Darrell,
I had the kind of similar situation where I need to naigate to standrd object listview and the Menu type is Community Page..
URL parameter in the Napili Community is very confusing and I have better workaround to reslove the issue.

1- > Create a apex controller to get the logged in user profile  

   @AuraEnabled
    public static Profile getLoggedInProfile() {
      Profile loggedinUser = [SELECT Name FROM Profile WHERE Id = :UserInfo.getProfileId() LIMIT 1];
        return loggedinUser;
  }

2-> Create a Lightning Component and fire the event on page load/Refresh with Init event that uses force:navigateToSObject based on the Id from Step 1. This takes you to the Desiser Profile Page.

   retunProfile: function(component, event, helper) {
    
    var action = component.get("c.getLoggedInProfile");
    action.setCallback(this, function(response) {
        Var state = response.getState();
        if (state === "SUCCESS") {
            Var loggedInUser = response.getReturnValue();
            Var navEvt = $A.get("e.force:navigateToSObject");
            navEvt.setParams({
                "recordId": loggedInUser.Id,
                "slideDevName": "detail"
            });
            navEvt.fire();
        }
    });
    $A.enqueueAction(action);
}

3-> The component will be kind of 

<aura:component implements="forceCommunity:availableForAllPageTypes access="global" >
//You may add other desired attributes
    <aura:handler name="init"  value="{!this}" action="{!c.retunProfile}"  />
</aura:component>

4-> Goto Napili Community Builder select newly created component from the drop down menu and publish.

I hope this should solve your issue.

--
Thanks,
Prashant