That wasn't my video, that was someone else's. I couldn't speak to how he did his run.
But each dino is worth X amount of points, and each island has a certain point threshold to get to 5 stars. Nublar is 10,000, Sorna is 11,000 & both want 26 species........... but Pena is 6,400 with 16 species. Research Tacano is 8,400 with 16 species. When you unlock sauropods and spam them, they give massive point boosts.
Someone on reddit created this Google doc that has ALL the info for every dino in the game. It helps you know how many dinos you need for them to be happy and how many you can put in a pen together. That's the key to filling each enclosure with dinos that fit. Otherwise you won't know that 8 dracorex don't work with 5 stegos. And that Dreadnoughtus & Camarasaurus in the same pen means you need the entire g island to keep both of them happy.
https://docs.google.com/spreadsheets...LihiNzrFk/edit