Well I got it but dear Jesus, what a mess.
First of all, thanks to everyone's input although I am not sure I will run with this method yet considering what a mess it is.
Here is what I did:
Loaded up a spare PC with Windows 10 Ver. 1511 Build 10586.164. Although any version/build before the CU update would probably be fine.
I used RUFUS
to download and set up a thumb drive to load the older Win OS. This did not load any drivers so I had a little time rounding those up and getting everything up to speed.
With that PC up and running I set up the file and printer sharing options to make the PC discoverable, turn off password sharing, etc. Basically everything you would do to a newly setup PC.
SMBv1 is on by default in this build so no need to go through any setup there.
I then set up a shared file and set permissions for that file, all access and read/write privileges.
Checked the Oppo and nothing there.
I opened a command prompt on the test PC and used the command nbtstat -a computer_name
to see what was acting as the master browser.
Found that one of the laptops was still on and acting as the browser so I shut it down and then rebooted the test PC.
****Side note, you can not run that command on the same PC you are using for some reason, it errors out. You have to run it from a remote PC.****
Now all windows PCs are off.
When the test PC booted back up I reset the Oppo and viola, I could now see the SMB share on the test PC.
I attached a pic of the result of what that nbtstat command looks like. That last line that reads __MSBROWSE__ GROUP Registered
tells you that its the master browser. It would seem if anything other than the sharing PC is the master browser, it wont show up on the Oppo. Just my observations, yours may be different.
I then booted back up the other 3 PCs in the house and everything stuck fine.
If that PC ever gets rebooted, it means every other PC and the Oppo would need to be turned off, the SMB sharing PC rebooted first, then all other PCs rebooted. So I am not sure I am going this route yet or not.