Rank 7 10,000 out of varying HP totals
Rank 8 Earth Dragon = 16,000 out of 330,000 Ice Dragon = 12,000 out of 240,000 Fire Dragon = 13,500 out of 270,000 Thunder Dragon = 15,000 out of 300,000 Dark Gigantes* (ダークギガンテス) = 15,000 out of 250,000 *I haven't personally seen one of these, so I assume it's unreleased.
Rank 9 18,000 out of varying HP totals for Glimmers 42,000 out of 420,000 for Silver Dragon
Rank 10 23,000 out of varying HP totals for all Emperors 40,000 out of 500,000 for Pandeon
Rank 13 100,000 out of 1,000,000 for Gold Dragon
Rank 14 60,000 out of 1,200,000 for Black Dragon
Rank 15 80,000 out of 1,600,000 for Dreadnought 100,000 out of 2,000,000 for Graniran - Strong (ギランイラン・強) 150,000 out of 3,000,000 for Surly Gigant (ツァーリ・ギガント)
Rank 16 100,000 out of 2,000,000 for all bosses
(...more to come, after someone actually gets this far...)
credits: ShinV of ULMF