Code snippets on the page that we can't find in the code injection or through FTP

We're seeing GTM containers and a global site tag in the source code of our site, but can't locate these codes anywhere in code injection, through FTP or on the pages individually.

The site is https://www.reitenright.com/ and I cannot say for sure what template is being used without turning off developer mode.

@Paul2009 Can you please elaborate on what settings you would need to know? Thank you.

For the community to help they'll need a working link to your website in order to see the issue, the template you are using and the settings in use. If your site isn't live yet, please set a site password and tell us what it is, so that we can view it.