Looking on the internet deeply has found these results:

none of them is the most popular phrase on the web.

most of them are 11,510,000 results on the web	none of them 1289,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Nov 26, 2005 ... "Most of them are..........." because in that sentence you are referring to is 'them' and that indicates that there's more than one of them i.e. plural Oct 4, 2015 ... "The American people are already with you, look at the numbers, there's homophobes still left, most of them are running for president I think.". Oct 4, 2015 ... “There's homophobes still left,” he added. “Most of them are running for president, I think.” (h/t The Hill). Follow Jeff Poor on Twitter @jeff_poor ... Mar 16, 2011 ... You would say "Most of them are British," because the "most of" prepositional construct takes an objective pronoun. I can't think of a case where ...	But none of them were strong enough. It means that none of them killed Maya. And anyway, none of them were walking backward. You better hope none of them are keeping their stash in their lockers. In fact, none of them are. But none of them brought these. Okay, but none of them work for Leona Lansing. She took about 100 photos and none of them look good.

most of them are

11,510,000 results on the web

none of them

1289,000,000 results on the web

More popular!

Nov 26, 2005 ... "Most of them are..........." because in that sentence you are referring to is 'them' and that indicates that there's more than one of them
i.e. plural
Oct 4, 2015 ... "The American people are already with you, look at the numbers, there's homophobes still left, most of them are running for president I think.".
Oct 4, 2015 ... “There's homophobes still left,” he added. “Most of them are running for president, I think.” (h/t The Hill). Follow Jeff Poor on Twitter @jeff_poor ...
Mar 16, 2011 ... You would say "Most of them are British," because the "most of" prepositional construct takes an objective pronoun. I can't think of a case where ...