Brothers 2006 Dell Inspiron 1525 running Windows 10 1607The fact that you are using a 7+ year old Apple computer it pretty telling in and of itself. Most Windows computers that are that old have long been rendered obsoleted by Microsoft and an OS that either doesn't work or is no longer supported. Apple still lists the min-2010 Macbook as able to run the latest version of macOS... and it runs it pretty well, I might add.
Other brother 2008 Dell Inspiron running Windows 10 1607
2008 HP Workstation Windows 10 1607
You can't say most either, since you have no factual proof of that. In most cases, even if a manufacturer list it as not supported, doesn't mean it can't run it.