How to Kill Zombie Printer? - Infecting Others!

My beloved old Dell 1710n Laser printer died last week. Can't complain, it was 14 years old, and it has served me well. I replaced it with a new Brother Color Laser printer. I also have an Epson Inkjet printer. All are connected via wired ethernet. There is nothing wrong with the printers or their connection, as I can print to them from my laptop, just not my main desktop machine.
Problem is, I can't get rid of the Dell printer from Windows. And even worse, it is "infecting" the other 2 printers and keeping them from installing properly.
I have:
Removed it from Devices and Printers, both old Control Panel application and new Settings app.
Removed it from Print Management (Administrative tools).
Removed its drivers from the driver store using "Driver Explorer" utility.
Set Device Manager to show hidden devices and looked there (already removed).
Scoured the registry and removed any traces I could find of it there.
Searched C:\Windows, Windows\System32,. ProgramData, and AppData looking for "Dell" or "1710n" (nothing found).
Run the Troubleshooter (in Settings) for Printers.
Removed all printers, Did an 'in-place reinstall' of Windows 10 Pro 1909 (18363.720).
Run sfc /scannow.
And yet, when I install the Epson drivers:
It uses the icon for the old Dell in Control Panel/Devices & Printers. Also uses the Dell icon for Microsoft Print to PDF, Foxit PDF, and XPS writer. (Where the he11 is it getting this icon from? Should be deleted!)
Won't print! Gives me a non-specific error message with no details.
Right-Click -> Properties shows Mfr as Dell and Model as 1710n.
Has a very limited set of paper sizes.
FAX and scanner drivers don't actually install.
When I install the Brother Drivers the driver installer program completes without displaying any errors, but it doesn't show up in Devices & Printers.
However, when I install it using the 'Add Printer' in Control Panel:
It shows up as a Unspecified device in Control Panel/Devices & Printers.
It shows up under 'Other' in Settings/Devices.
Can't print to it 'cuz Windows doesn't think it's a printer.
At this point, I suspect (only thing I can think of) is it is being stored in some hidden metadata in the file system.
Is there a way to completely clear and reset the printers and printing functionality in Windows? Can someone suggest what else I might need to check, where I might want to look, what I might want to do to get my printers working?

Thank you Jacee for the suggestion, but it didn't help. All the things in the Dell article are things I have already tried, multiple times. I even re-installed the driver so I could use Revo to aggressively uninstall it. That didn't help either.

At this point, I am dead-in-the-water and cannot print from my main desktop machine, and I have spent at least 8-10 hours researching, digging thru files and the registry, running scripts... I'm a hardcore computer geek, pretty knowledgeable, and usually solve my own problems but this one has got me flummoxed. I think what I need is a way to clean reset the printing system without clean reinstalling Windows. I try to reinstall Windows about once a year, but I use my machine for so many different things, and have so much software, customizations, and other stuff installed that that is no small task and takes me several days.

Windows/Microsoft in their infinite wisdom decided to erase all my restore points for some unknown reason (and not for lack of space). I back up personal files on a regular basis, but my last full system backup including the O/S is about 2-3 months old.