I erased all content and settings on my iPhone, and the Find My iPhone activation lock was disabled (no activation lock). So ... Why is it still listed in iCloud Settings, Devices? The info blurb on Devices page says that it's listing the devices still signed in. How is this phone still signed in? Is this normal? Is something wrong? It should be signed out. Maybe it could be listed as an old device ... but not "Signed In". I no longer have possession of this phone. I am very concerned for what this means. Worried I did something wrong here.
As described in this Apple support document, you should have signed out before deleting the device. The article provides also alternative methods (in case one has no control of the device).
If you're using iCloud and Find My iPhone on the device, sign in to iCloud.com or the Find My iPhone app on another device, select the device, and click Erase. After the device has been erased, click Remove from Account.
If you can't follow either of the above steps, change your Apple ID password. This won't remove personal information that's stored on your old device, but it prevents the new owner from deleting your information from iCloud.