Chuck Norris is not on this list because every list starts with the second best at the top. Chuck Norris does not belittle himself by being at the top of a list.
I can't speak for Ichigo since I don't know much in that category, but how is it not Goku by a landslide? "But Master Chief and Guardians are stronger/faster/cooler/smarter!"
Stronger? Not even in the slightest
Faster? Again, not even a chance
Cooler? Preference, but preference doesn't decide fights unless they're staged.
Smarter? Maybe on a technical point, but contrary to common belief, Goku is very wise when it comes to fighting, just not anything else, haha.
Whether you wanna admit it or not, the only Goku that had the chance of dying to most of these people was Dragonball Goku. The moment you step foot into Dragonball Z, Goku quickly raises to power that easily exceeds whatever the Darkness can throw at mankind. He may just be one person, but he's got the energy to speed through and destroy most fictional characters. He's around the power of Superman (Depending on the comic, and no.... that Screwattack fight wasn't very well thought out. It was quite biased).
Point is, Goku would most likely be the winner due to his insane amount of power. He's not the strongest character in the fictional universe, (Although his Super Saiyan God transformation does make him a nice competitor for that title) but he's no weakling in the slightest.