The main features of black market political cartoons can include satire that pushes boundaries, unconventional art styles, and a focus on topics that are suppressed or ignored in mainstream media. They might be produced and distributed secretly to avoid legal consequences.
I think there might not be a direct connection. 'Meme girl chan' could just be a random internet character, while manga is a form of comics. They could potentially intersect in some online creative works, but it's not a given.
Well, bay girl cartoons usually have beautiful backgrounds and sweet music. The characters are often depicted as kind and brave. They also tend to teach valuable life lessons in an entertaining way.
The quality of Einstein's cartoon drawing might vary. Maybe it shows his unconventional thinking and perspective in a visual form. However, without seeing the actual drawing, it's hard to be precise.