I don’t think characters that were introduced in other movies count as true origin stories. We already knew who Spider-Man and Black Panther were in this world before their movies.
My list:
1. Guardians (by a lot)
2. Captain Marvel
3. Dr. Strange
4. Iron man
5. Antman
6. Captain America
7. Hulk
8. Thor
if you really want to include the other two they would be above captain marvel