I have a Galaxy S3 SCH-1535PP currently running 4.4, and I have looked online for solutions, but none of them are working. I do not have a google account hooked up to the phone. Am I just SOL?
Welcome to Android Central! It's unusual not to have a Google account linked to the phone. How about a Samsung account? You might be able to use Find My Mobile to reset your password, but I'm not sure: https://findmymobile.samsung.com/login.do
For some weird reason, my phone doesn't show up under "Registered Devices". Is there any procedure I could use with any programs. I do not have root access, but I do have on USB Debugging.
Presumably, you never signed the phone into your Samsung account (or set up a Samsung account). Are you absolutely certain you never associated a Google account with the phone? That's the only way I can think of to try to get into the phone.