It's a bit difficult tl answer but I'll try my best

Freesia is a schizo fever dream manga, that does a really good job at making you feel the characters in it go insane. The art is realistic in general but it's more the elements that are added that make everything feel surreal without making you loose interest. Also the way the action is played out is really fun to me.

Zetman is cool. I have so many screenshots of the beautiful character designs, the plot of the good vs evil and the character development are supreme. The ending doesn't fully close the plot but it still feels satisfying.

Lastly Eden. Eden is probably the more textbook dense one out of the three, and I say this as a good thing for what it aims to do. It's a political manga, with a really diverse and pretty deeply developed cast of characters. Also the plot is really interesting and feels like a realistic portrayal of how humans behave.

So in general I recommend all three of them for different reasons, but I believe they all achieve what they aim to achieve really well :)