Thanks to both for the interest and suggestions.
Have taken the easy way out now and migrated by old Win 8.1 desktop PC to Win 10, was an opportune time with commissioning the new Ryzen 5 desktop and adopting this as my main PC, after implementing all the directions as per the youtube video link mentioned in the first post everything working fine, all devices can fully access each other throughout the network and appear on explorer, seems best not to mix Windows systems with respect to network connectivity.
@Chrysalis:
Note, Win. "homegroup" is no longer supported on Win 10 since the last major system update, I think this is mentioned in the youtube video.
Did plan to implement a dual boot (Win 10 & Linux Mint) on my old i5 desktop but had a bad experience with this yesterday, after installing Win 10 first then Linux Mint on two separate disk drives (disconnecting the Win 10 disk while loading Mint), managed to leave the PC un-bootable from either system, had to re-load Win 10 from scratch again.
I know various ways around this are well documented but have concluded that it's not worth the time and effort at present.