In "Tax Agency Report", there are no Tax Agencies listed under the Tax Agency drop-down. Should be Receiver General.
https://community.intuit.com/articles/1562564-sales-tax-liability-report-does-not-show-tax-vendor is not the issue. My two HST items (HST and HST (ITC)) are set up as 13%, they are not Inactive, and all appropriate inventory items are set to tax type "H", which is HST.
However, if I Right-Click on the "HST (ON)" item on the Items List, and select "Quick Report", I get a report that shows Receiver General in the "Name" column.