They still are missing a lot, like how the CN wiki is missing this bug for CN Invaded at 0:35.
Anyway I think maybe we can scour the recordings of some shows on myspleen or torrents or kissanime for some cool looking screenbugs or on-screen promos, you know, the ones that sometimes take half the screen? I remember seeing a promo for the Clone Wars (2003) on a vid of Courage but can't find it now :/ Even though not as common, channels still do some variations like the current CN Halloween one which has bat wings.
Then there's cool old animated Nickelodeon ones like these ones:
and wierd static one's like this:
As a designer, I think it would personally be fun to try and re-animate and recreate these bugs so that they're not so blurry, but idk. But yeah, does this even matter to anybody? There's even an article about a lost screen bug on q LostMedia site, where a person found the bug in the comments, linked the youtube video, but the channel the video was on was terminated, so it's lost again -> lostmediaarchive.wikia.com/wiki/Nickelodeon_Lost_Screenbug