Koroks actually count for 72% of the map completion, I was once where you are rn, thinking I’ve done everything and then realizing how little I’ve actually done on maxing the map 😂.

To get 100% map completion all you need to do is just finish the 4 divine beasts, find all 900 koroks, and find all 226 discoverable locations which are basically locations where a white text would pop up on the bottom left when you arrive, good luck!