Please advise if Content Query web part is available on SharePoint 2016 - standard edition. Thanks much!
Based on this article Simply, What’s new and deprecated features in SharePoint Server 2016 ? it's not a deprecated feature
So it's should be shown at publishing site .
If you are using team site try to activate
SharePoint Server Publishing Infrastructure and
SharePoint Server Publishing
- On the Site Collection Features page, click the Activate button next to SharePoint Server Publishing Infrastructure.
- On site feature , activate SharePoint Server Publishing .
Once this feature has been activated, the Content Query Web Part should then be available throughout the Site Collection.
For more info check My Content Query Web Part Is Missing!