Having an issue creating a List object from a string value.  The selectedObject value is coming over as a string value.  Trying to convert the string value so that it can be used as the object in  a list or a Map

Class

private Sobject selectedStringSobject;

selectedObject = 'CustomObject__c'
selectedStringSobject =Util.getSobjectFromString(selectedObject);

List<selectedStringSobject> newrecords = new List<selectedStringSobject>()

Util

public static SObject getSobjectFromString(String stringObject) {
        Map<String, Schema.SObjectType> obj = Schema.getGlobalDescribe(); 
        Schema.SObjectType so = obj.get(stringObject);
        
        Sobject newObject = so.newSobject();
        return newObject;
    }

error is : Invalid type: selectedStringSobject