Thank you, added to the spreadsheet.
I have updated the background completed date as July 22 and not July 24 as the tracker has 2 business days delay. For the accurate dates, please check the application history section at the bottom of your tracker.
Regarding the ghost update, you got one GU on July 20. The update on July 24 is a real update as background was marked completed and reflected on the tracker on 24th so it is not a GU but a real update.
Regarding the 'two new updates' on the tracker, it is a bug in IRCC tracker and it will mark all previously completed steps as new update. In your case, if you noticed it would be showing a new update on 'application filed' step. When you eventually get an oath scheduled in the coming months, you would see it as showing 8-10 new updates as it marks all previous steps as new updates

so you can ignore the numbers and start preparing for the test as you might get a test invite soon!