This may be completely off base but if the drivers you've tried don't play nice w/Windows 10 you might be able to utilize a cheap hp JetDirect ethernet print server box. You'd need to install the driver on it AFAIK but that might circumvent 10, be a quick solution. Sometimes a hardware solution beats a software solution.
Let us know how you're fairing. I supported printers for years and had a good end of day today when (after no message telling me install was successful) I got Windows 10 up and running.