Imagin
Douga Tairiku
Don’t know what these are, or if they really exist (I’ve spotted some genuine errors in the list I’m using in the main). May be the names of blocks rather than a show.
UFO Princess Valkyrie
Couldn’t find the OP clip.
Boukensha
Now this was the really curiosity. It exists, it’s about Christopher Columbus, it aired on NHK and it appears to slipped down the back of history’s sofa.