When I read that description, the first two videos that came to mind were Give It Away and Smells Like Teen Spirit. I didn't even remember if those were released in 1991, but it turns out they both were. I suspect many others of my age would also think of those before Hunger Strike. But that doesn't prove those videos were better or more influential, just more popular and got more play on MTV.
I don't know how "pioneering" Temple of the Dog really were, but it does say something that a band that only made one album was worth reuniting 25 years later.