The real problem is that when you move Mac-formatted files that run on a Mac-only application, and there is no equivalent app in W10 (for example, Mac Word 2016 and Windows Office Word 2016). Those apps can read a Word file written on a Mac from within a Windows app, Word 2016. But, not all Mac apps have direct equivalents in the Windows world without going through some kind of conversion program. And that's where it gets sticky. This has been going on since 1985 with the advent of Windows 1.0. Macs of course pre-date Windows by 4-5 years or so. As soon as Windows hit the market we've had this problem all along.
So, if you are using a Mac only app; such as iMovie native; those video files cannot be read by a native W10 app such as WMM (Windows Movie Maker). This is why Pixar has no Windows computers in their company-anywhere!!
It's all Macs. So, if you're into making production video movies or TV, the answer to your help request is there is no equivalent for you in the Windows world and you will be stuck buying new Macs the rest of your life. For other apps such as Desktop Publishing, some Gaming platforms, such as Steam, MS Office apps as mentioned already, and some 3rd party photo apps such as Adobe Photoshop or Elements which are written in dual-platform modality, you can move most of your stuff over to W10.
Most probably your files will not come over 100%.
I've been doing it for over 30 years, and I've never seen that move done where 100% of the Mac files are readable by
ALL apps on the Windows side. I don't care how many converters you use, free or paid, that's not going to happen.
Hope that provides some insight. You can also buy Macs much cheaper on ebay or refurbished through the big chains such as Micro Center.
<<<BIGBEARJEDI>>>