Our customers reported this issue. They were expecting, when filtering on the name of a user, to see that string inside the: "Created By" filter. Instead they see the GUID value, but our customers found it difficult to work with the GUID (since it does not say too much, compared to the actual name of the user). Therefore, we would like to ask you to consider our customers’ point of view, and try to modify this. Thank you!

Solution: Show the user name in the filter: "Created By", this will allow users to immediately see who created the record instead of taking multiple unnecessary steps to figure this out.