all of them are vs all of them is

Some examples from the web:

• And not all of them are exactly fans.
• While all numbers are ranked, not all of them are associated with an actual activity.
• Not all of them are our boys.
• Conveniently, almost all of them are WinXP icons with alpha-channel.
• Sadly, all of them are dead now.
• Look, all of them are scared except the bride.
• And all of them are outside of America.
• Each of them has a unique feature, all of them are equally charming.
• But not all of them are satisfied customers.
• And I bet you all of them are encrypted.
• Almost all of them are perfect unknowns, as much as novices in "politiquanteries".
• Hatch and unhatch them until all of them are hatched.
• Granted, not all of them are writers.
• And certainly not all of them are supporters of armed groups.
• But not all of them are needed to be included in the travel slideshow.
• The truth is, not all of them are simply promotional websites.
• Knowing a Good Deal when you see one.Yes all of them are important.
• Not all of them are as bad as you think.
• That's right, and not all of them are good.
• So have lots of people, and I'm pretty sure not all of them are recovering alcoholics.

Some examples from the web:

• ... situations involving overwhelming quantities. Note for Examples: This trope only applies if "All Of Them" is a response to a direct question about quantity.
• Nov 7, 2014 ... The members of a family want to go on a picnic, But not all of them. Is it correct to say: "Not all of them want to go on a picnic" ? phrase-usage ...
• I got 99 problems and all of them is being happy. Submit Corrections; TYLER, THE CREATOR Lyrics · A-Z Lyrics. Writer(s): Tyler Okonma Copyright: Sony/ATV  ...
• Them other broads is other broads, all of them is last year · Can't get mad, I'm just stating facts here · [Hook: Tank] Down-down like you, down-down like you, ...