In this phrase "none of + plural noun", why can the predicate use both singular form and plural form?

Question

None of my friends ever come to see me.

None of these appeal to me.

But none of them owns the landscape.

In this phrase "none of + plural noun", why can the predicate use both singular form and plural form?

Answer 1

Very good question.

It can take both singular and plural form. OALD defines it -

none - not one (is singular) of a group of people or things; not any (could be plural) - any can be used with plural [any suggestions?]

As exactly mentioned in examples there...

None of these pens works/work
We have three sons but none of them lives/live nearby