Expenses in reconcile issue

Let's find out why your expense transactions aren't showing in your account, Taylor.

When you reconcile an account, you compare two sets of records to check that figures are correct and in agreement. Therefore, all transaction should show up on the Reconcile page. 

It's possible, the transactions are being filtered to a specific type. That's why it's not showing on the list.  You'll want to make sure that you've selected All under the Transaction type so it shows up all transactions for the month. Then click Apply. I've added a screenshot for visual guide: 

On top of that, QuickBooks Online (QBO) offers variety of reports that caters to your business need. You'll only have to make sure you've customized them so you'll get the information you need most: Customize Reports In QuickBooks Online.

You can always reply a comment below if in case you need further assistance with reconciliation. I'll be one post away if you need further assistance. Have a great day ahead!