How to prevent retrieving Private Lists in Marketing Cloud?

Question

I'm trying to retrieve Subscriber's public lists only, but it keeps returning public lists + a private list called "All Subscribers". I've tried both following methods but neither worked, any help would be appreciated. Thanks!

METHOD 1:

var subLists = subObj.Lists.Retrieve({
                Property: "Type",
                SimpleOperator: "equals",
                Value: "Public"
             })

METHOD 2:

var subLists = subObj.Lists.Retrieve({
                  LeftOperand: {
                      Property: 'ListClassification',
                      SimpleOperator: 'equals',
                      Value: 'PublicationList'
                  },
                  LogicalOperator: 'AND',
                  RightOperand: {
                      Property: 'Type',
                      SimpleOperator: 'equals',
                      Value: 'Public'
                  }
              })