Call me biased but it's a very strange feeling that Ricciardo can be third in that list and yet still feel like he's been underrated. There were at least 6-8 races that completely went beyond any expectations of both he has a driver but also the cars pace in general. It started in the first race of the season, and was also like that at the end. In the middle were 3 race wins (2 in a row at one point). Separate from that there was a lot of risk taking and bold overtakes and no mistakes. It's hard to find any mistakes all season, a couple minor ones but nothing that really cost anything. The worst was a couple of anonymous races where the car didn't seem to suit the track or below average qualifyings but the race pace was nearly always above expectation. It's not really a big shame to be behind Alonso or Lewis though as they also drove well. Although Alonso seemed less... less something (can't find the right word) towards the end of the year. A part of that was the car's performance but yeah.
It's a big strange that on the one hand, people in the media have said how great it was that the Merc drivers had such a close WDC battle and that's what made the season avoid being dull, but on the other hand, the team principles rate one of them first and the other fifth. Something doesn't add up. And it's not just the unreliability either. Rosberg also had poor reliability at times. And both of them made mistakes. Lewis nearly always gave a better impression though, in terms of having more pace or being in control of determining what would happen.
You can never be happy with any list, there's many ways to look at things and it's hard for one list to always be right. Everyone has a different criteria so they shouldn't be taken that seriously. If I had to pick one from this topic, I'd say Cult's list is harder to complain about.