Hello journeyofmyheart!
You have a nice company name or username!
You need to remove yourself as a user in the QBO company file to remove it from your list of companies. However, only a Master Admin user can remove one. So, you'll invite a dummy user and make him a Master Admin, and then let him remove your user profile.
On the other hand, you can out our blogs to keep updated with the latest improvements in QuickBooks.
Let me know if you have more questions about removing a QBO company.