http://public.wsu.edu/~brians/errors/catched.html
Ok I think I understand now: Sometimes it`s the improper spelling, and sometimes it`s a mixture of different words, that is used in that "map" of how to miss spell (haha).
So, there is no word "catched" but it`s just a wrong for "Caught". I was wondering, whether this word exists, and then found it`s the spelling error. The site is a little misleading in that sense, sometimes it uses spelling errors as comparison, sometimes similar wordings. Bummer