1. Answer: It depends on everyone's taste and these rankings change all the time. According to RankMyPorn, at the moment, the top ranked Blondes Male Pornstars in the world are: Tyler Nixon, Matt, Luke Hardy, TJ Cummings, Denis Reed, Thomas J, Ben, Ryan Mclane, Rasty, Michael Fly, but these will change based on what people vote.
2. Answer: It changes. You can see the latest rankings on RankMyPorn.com and also vote on it for free.