Just a couple of points here.
This is an extremely generic list. And I don't agree with it. Nothing personal Mark, but I just don't like these kind of lists. I'll tell you why.
1. Most of the time, these influencers change ridiculously simple and straightforward suggestions that appeal to the mass public. It's the fundamentals that you should know about the way you work and how you handle social media, your life and whatever else. Before anyone says "Yes they are good reminders" - you don't need to follow someone who is going to remind you about the fundamentals in each post. It's boring. It's not fresh. It's static.
2. Guy is an amazing guy and has achieved a lot. He is extremely busy as well - which means he does not have the time to sit down and write posts on LinkedIn every couple of days. If you take a portion of his post and Google it, you'll see that they are from blog posts or articles or books of his from 4-10 years ago. A lot of his advice is outdated on the LinkedIn network. That does not mean that it's not true, or not in some way relevant, it's just that there are SO MANY people out there who are saying things in a much better fashion, crafting it for TODAY'S audience in a much better way.
3. Like Daniel said, people like Rand Fishkin should be on your list.
Instead of generic influencers like these - you should look to follow people in your industry who are spending hours on creating content FOR YOU. They do not have millions of followers. They probably don't even have 50,000. But what they have, is the time to research, put together opinions, create a story and give you actual, real advice based on what's out there - tailored to your very needs. People tend to overlook these guys a little too much.
Mark - what would be insanely useful therefore, would be to find people who create AMAZING content, content that is FRESH, NEW and not re-hased and recycled or just out there to get more sign-ups to a mailing list. These people don't have a lot of followers and they are hard to find, which is why your article on those people will be a lot more valuable than this one on these people who everyone knows about and is exposed to anyway.
Just my $0.02. :)