Windows 10 Phone is mostly neglected now
and Windows 10 Mobile running on it is similar, but not same as Windows 10 "standard" (home, pro)
Printing is one of technical differences
Printing on Windows 10 Mobile explained (video) - MSPoweruser
Windows 10 Mobile: Printing - Petri
Supported Printers for Windows 10 Mobile
HP is the the only "commited" maker of Windows Phones now...
HP Elite X3 business | HP® Official Store
That may change if rumors of Microsoft Surface phone come true.
Microsoft Surface Phone: Everything you need to know
Microsoft patent reveals foldable phone that turns into a tablet - The Verge