wedding - What's the order of importance of Honorees under a Chuppa?

Under a Chupah, a Baal Simcha (in today's times) has a number of Honors (כיבודים) to give out. Here's a list of them (possibly not complete):

1. מסדר קידושין


2. 2 עדים (witnesses)


3. קריאת כתובה (reading of the Kesubah)


4. First 2 ברכות


5. 3rd ברכה


6. 4th ברכה


7. 5th ברכה


8. 6th ברכה



9. Last Bracha

My question is, what is the correct order of importance* of these positions? In other words, sort the above 9 items in order of which should be given to the most important person.

* By "importance" I specifically mean in terms of how much of an honor it's considered to give it to someone.