The game aspect obviously.

Tags can be accurate, however, the reasoning you give, especially on the balancing aspect is null.

"Oh wow, Sasuke Rinnegan was amazing, he should be amazing in the game too!" That incorrect when addressing balancing.

Now I'm genuinely gonna break down your entire post.

"why gnw madara wasn't classified as a sword user or a konoha ninja."

Technically, he's supposed to be Tobi [Great Ninja War]
Which has his origins as Unknown since we don't know he's Obito at that point.
Secondly, he uses a Gunbai which is Madara's famous Fan. It's not a sword.

I also asked why edo and susano Itachi wasn't in the sword category along with the original Madara now

Itachi doesn't use a sword.....And Susanoo Itachi has The Sword of Totsuka, which isn't a sword or a blade. It's the liquid within the gourd that Susanoo carries.

Ronin Naruto is classified as a sword Ninja when the sad truth is Naruto doesn't even know how it feels to hold a sword. through the entire anime he fights with clones why is he classified as a sword user when some Uchihas aren't

https://www.youtube.com/watch?v=rHB2vlTFEiA

Anyway, I'm not even gonna touch the rest because it's silly.

The reasoning given to support a buff is what someone would call "A lack of insight"