I'm not sure how many choices you have in you question but you could add a filter to show only the choices that are not one of your predefined choice. This will show all the rows which used the 'other' option.
Hope this helps
Also, next time what you can do is mimic the 'other' choice behaviour yourself so that it is separated it in your response table.
You would add a 'normal' choice and label it 'Other' (as opposed to use the option to include other choice from the property panel). Then you can add a required text field and use show/hide logic to show the field only when the other choice is selected.
This will create two columns in your response table instead if one. One column being all the other options typed by your users.