History: What are the 'typical ranges' described in the video?

What are the 'typical ranges' described in the video?

• Bass, low mids, high mids, low highs, and high highs.
  I've never heard of high highs.
• Low bass, mid bass, upper bass, low mids, high mids, and highs.
  Good work!
• Bass, mids, and highs.
  There's more ranges to mix typically than three.
• Low bass, upper bass, low mids, mid mids, high mids, and highs.
  I've never heard of mid mids.