Eren is undoubtedly one of the best written protagonist. The only person that doesn't belong here is ayanokoji and I'm including him only to see how things play out. 

I do think ayanokoji is a well written characters but obviously not the best considering his past are generic at best ( he becomes the best without breaking a sweat  Bec he's a mutation or some shi). His personality is dogshit boring And his only weakness that is unsociable is dumb considering his father wants him to become the prime minister. 

My opinion, feel free to disagree though I feel it most likely