What was the name of the crazy show-jumping champion from the 1970s who used tojump right out the saddle as the horse cleared the jumps?

The show-jumping champion you’re referring to is likely the British rider Harvey Smith. Known for his unconventional style, Smith often jumped out of the saddle as his horse cleared obstacles, which became a signature aspect of his riding. His bold techniques and charismatic personality made him a standout figure in the equestrian world during the 1970s.