Shawn Hooper

This plugin generates a list of all the custom page templates available in the active WordPress theme, and shows you how many pages use this template. 
It will also show you if the page contains any Gutenberg blocks or not.
You can also click on the count to access the list of pages that use a specific template.

Page Template Usage Info

Shows you which pages are using which templates, and whether or they are built with Gutenberg or not.

Andrei

HeyGov

<a href="https://heygov.com" rel="nofollow ugc">HeyGov</a> helps digitize citizen services for your municipality.
This plugin streamlines the installation for the HeyGov widget on your WordPress website. The widget can be used to: 
– report issues or requests in your city or town 
– submit applications for permits and licenses 
– reserve local venues for your events 
– search for information, meeting agendas and other documents in your city or town

Manage the HeyGov widget on your municipality website

Page Template Usage Info vs HeyGov