The 10 all rounders were, of course, the 10 who stood before him. Their abilities separated from the unclassifiable abilities in that they had several strong points rather than one odd strong point.
For example, among the 74, there was a young woman with an ability similar to King Arthur's. Except, rather than become streams of light, she became an odd liquid thicker than water. She could also coat her skin and her surroundings with this liquid to form a pseudo-domain of sorts that worked well for her.
But, in a team battle, her uses were minimal. The defensive nature of her ability was only useful for her and couldn't truly be extended to others. At the same time, she wasn't a very good attacker either. In fact, she was weak in this regard.