Question: We studied the concepts of Sefirot in the four phases of direct light descending from above downward. What are Keter, Hochma, and Bina in the reflected light? How are they different when ascending from below upward?

Answer: The difference is that Malchut, which was created by the nine Sefirot and desires only to receive, in the reflected light wants only to bestow liker Keter of the direct light. Therefore, Malchut of the reflected light is called Keter of the reflected light because it acts in the same way as Keter of the direct light.

All the Sefirot of the reflected light are similar to the Sefirot of the direct light. The only difference is in their origin. The direct light comes from the Creator, while the reflected light comes from the creation.
[329770]
From the 2nd part of the Daily Kabbalah Lesson 5/23/24, Writings of Baal HaSulam “Preface to the Sulam Commentary”

Related Material:
The Difference Between Direct and Surrounding Light
Fulfillment Is The Screen And The Reflected Light
Climbing The Steps Of The Spiritual Worlds