One thing I have noticed immediately from when I started using CSZ was, his best normals were world widely known as 21(2+1), 33, 34. But nobody ever looked at B22 and realized how good it was as a block string until I was first seen using it on Foxy in SVB, and quickly after, peope were instantly using it right after SVB as his best normal as if it "always was". Although I can't find any footage or mention of it being used in a single fight before SVB, sure it's been used after 34, but not as a block string, But il never get credited for first implementing it in competitive play.