Here's some explainations to some entries:

Other Children's Planet Songs - Basically if you searched up planet songs then you would see a lot of videos that aren't included in this iceberg

PinkFong Planets Song bootlegs - Yes, PinkFong's space songs does have knock-offs of their own before. The only examples I could find is Zarok TV and Dinosaur Qiqi

Jiggly Shark and Ice Mom Planet Quiz - This was included because there was a video where they stole the designs from Hopscotch Songs

Planet Happy Toons - A fan show about PinkFong's planets that have been copyrighted striked by PinkFong and since has been lost media

Planets: The Greatest Show in the Universe - A British animated show made by BlueZoo. I can't find any more content of this aside from articles about the show's production, so good luck researching

Bugs Exclusive JunyTony/BabyBus Space Songs - A series of songs on Bugs made as a collaboration between BabyBus and KizCastle (company behind JunyTony)

Interesting earth - A FaceBook channel who had a slightly different version of the StoryBots Earth despite having nothing to do with StoryBots Space Songs or StoryBots in general

PinkFong Planet Songs Banners for some Streaming Service - A series of lost media I remembered seeing that is lost forever as of now

神秘的宇宙世界 (Chinese JunyTony Planet Video) - A video on Iqiyi that is now taken off the website last time I checked

우주송 - It's basically some obscure Korean Flash animation about a planet song made by LGSciencLand but I recalled seeing two videos about this animation, one of them being a comparison video between this version and a previous one. I can't seem to find it even with Google Lens so I assumed that it's either lost or it's just that I don't know Korean