Thanks for reaching out to us here in the Community.
I can share some information about unspecified transaction.
Transactions under the Not Specified column are not assigned to the category you selected in the Display columns by field. For instance, if you select Class, those amounts that are under Not Specified aren't assigned to a class.
To further check the transactions so you can assign them to a specific class, you'll have to click the amounts to open it. Once opened, assign a class to them. When done, go back to the Balance Sheet report and select Class on the Display columns by field. You also need to ensure that you select the correct Report period and Accounting method.
QuickBooks also makes it possible to personalize your report to reflect more of your business identity. Please check out this page for guidance: Customize reports in QuickBooks Online.
Feel free to get back to us if you have additional questions. We're just around to help you. Stay safe!