To sort by creator:
- Open up the filters in your project or view. For projects, select the 'Filters' button at the top of the view. For summary views, click the three dot button on the side of the view and select 'Show filters'
- Select the "Created by" button. It should open a drop down with a list of all your team members.
- Select the person(s) you want to filter by and press "Apply"
See it in action below: