Welcome to the Q&A Forum

Thanks for taking the time to respond.  The guide on setting up tracking across multiple domains was helpful to learn how to filter referal traffic.  Unfortunately in this case there is a combination of subdomains with tracking code and also others without, as they are intended to be internal.  I am hoping to prove whether having so many is even in some small way negatively impacting the root domain.  This article offered an interesting viewpoint: https://www.pi-datametrics.com/identify-seo-sub-domain-conflict-cannibalisation/

We self-host our public website, but over time have also added  subdomains onto it that are not public and are for internal or even client portals.  I am seeking advice as to whether those subdomains affect the analytics data (self referrals, visits, bounces) of the public site that I am tasked with analyzing.  I feel that it does skew the data but need to build a solid case to move the public website to a new domain, so as to leave the existing one in tact with all of its subs.