Yeah I was surprised as well. Watching YYH again, the similarities are amusing. I like trying to guess the Nen types of the YYH characters. Yusuke has gotta be an emitter. I like to think Koenma showed him the spirit gun just to save him wasting time trying to figure out his own type. Kuwabara might be a transmuter or a conjuror depending on how his sword works. The show isn’t 100% consistent on whether he can drop it or not so who knows. Kurama is a manipulator for sure since he controls plants. Hiei might be an enhancer