[Salesforce][Apex] how to sort a List by any property

CustomList.cls

public class CustomList {
    
    private Map<String, Object> innerlist = new Map<String, Object>();
    
    public void add(Object obj) {
        this.innerlist.put(obj.hashCode().format(), obj);
    }
    
    public List<Object> sortBy(String propertyName) {
        String str = JSON.serialize(this.innerlist);
        
        // NOTE: key is hashcode
        Map<String, Object> jsonMap = (Map<String, Object>) JSON.deserializeUntyped(str);

        List<String> hashList = new List<String>();
        hashList.addAll(jsonMap.keySet());
        
        List<Object> sortList = new List<Object>();
        // NOTE: key is (hashcode + target property)
        Map<String, String> valueKeyMap = new Map<String, String>();
        
        for (String key : hashList) {
             Map<String, Object> objmap = (Map<String, Object>) jsonMap.get(key);
            sortList.add(objmap.get(propertyName));
            valueKeyMap.put(String.format('{0}{1}', new List<Object>{key, objmap.get(propertyName)}), key);
        }

        // sort
        sortList.sort();
        
        Map<String, Object> result = new Map<String, Object>();
        for (Object propValue: sortList) {
            for (String key : hashList) {
                String targetKey = valueKeyMap.get(String.format('{0}{1}', new List<Object>{key, propValue}));
                if (targetKey != null && !result.containsKey(key)) {
                    result.put(key, this.innerlist.get(key));
                    break;
                }
            }
        }
        
        return result.values();
    }
}

Sample.cls

CustomObject obj1 = new CustomObject();
obj1.Name = 'bbb';
obj1.Id = 88;

CustomObject obj2 = new CustomObject();
obj2.Name = 'aaa';
obj2.Id = 100;

CustomObject obj3 = new CustomObject();
obj3.Name = 'ccc';
obj3.Id = 1;

CustomList listA = new CustomList();
listA.add(obj1);
listA.add(obj2);
listA.add(obj3);

List<CustomObject> sortNameList = new List<CustomObject>();
for(Object obj: listA.sortBy('Name')) {
    sortNameList.add((CustomObject)obj);
}
  
System.debug(sortNameList); // result: obj2, obj1, obj3