I'm wondering whether this list is a real list of people that Kappy named, or if someone else added some names to it. I've looked for any first-hand evidence of Kappy naming Downey as a pedophile, and haven't found any so far.

Downey has consistently defended and helped Mel Gibson for years. For example, he made this passionate speech in defense of him:

https://www.youtube.com/watch?v=_AAJuynxnTQ

He also said that he would only agree to be in a fourth solo Iron Man movie if they hired Gibson to direct it.

Gibson is well-known to hate Hollywood pedophiles (and vice-versa). I find it hard to believe that a pedo would defend him and try to help him out.