About Bleach brave soul

So yeah. I was discussing with a Patron in my discord server, when he introduced to me something called Beyond Resurrection.

Basically a principle introduced in the mobile game of Bleach

I did some research and the Chara design was pretty dope. It seems like there's also beyond Bankai.

But like. Since I don't play the games I was wondering if someone could explain. I really want to use those Chara design. Tier in beyond mode was so sexy. XD.

Also it seems like the game introduced some bankai that weren't shown in Manga. Not even in novel.

For example Jushiro's bankai.

I just saw a video so I don't even know what his bankai does and are there others characters like this? I could also use those informations

Have  a good day.