Fukumotos work is really universally loved. Never seen someone who hated him. Most of his work is genuinely loved, and should be a reason to learn Mahjong just to read/watch Ten and Akagi.
Kaiji is a different beast. Ten seems to me the middle ground, a guy who is learning, struggling but also getting better. Akagi is someone who is a genious is gets in dangerous situations but intents to destroy, crush his opponents.
In Kaiji, it is a matter of survival, he is not developing to be a better gambler, he is not trying to crush his enemies. He just wants to survive, tries to survive.
I also love how the manga/anime portrays the mid 90s crisis and lost youth of Japan. A very excellent portrayal of a lower class youngster, taking odd jobs here and there, losing it to stupid gambling. I alwas sympatized with kaiji far more than welcome to nhk characters, even though Kaiji is technically not a neet.
Also, the soundtrack is awesome. Made by the guy who also composed deathnote, but pushed aside due to some dumb weed charges. What a shit show japan is. He was arrested around 2012ish and no one (iirc) gave him another work, for fucking weed.https://www.youtube.com/watch?v=vwzNLYbkcFM