These rules are often violated by native speakers of English, and these liberal, incorrect uses can be confusing for people trying to learn the English language. You are right in thinking there are mistakes in these examples.
The first example should use the past perfect. It is incorrect as written because it is not possible to "know" something in an instant, such as would be appropriate when using the past tense. Instead, it should read:
Ten Things I Wish I Had Known When I Started 'Pokémon GO
The second example is different. The speaker is not wishing that something had been true in the past. Rather, the speaker is wishing for something to be true in the present and should therefore use the present tense (or, more appropriately for this specific case, an infinitive). This phrasing is awkward because it's applying a technical fix to colloquial speech, but here's what it might look like if written with proper grammar:
I Wish To Know How It Would Feel to Be Free
The third example is referring to 17 different things the writer wishes she or he had done, and of course it's not possible to have done all of these things in a single act (probably). Therefore, it would be better to write it using the past perfect.
17 Things I Wish I Had Done Before Turning 35